How to Build an AR-15 Upper Receiver Presented by Larry Potterfield of MidwayUSA

Рет қаралды 1,193,943

Күн бұрын

Building a standard AR-15 A2 Upper Receiver is pretty straightforward. Watch as Larry Potterfield, Founder of MidwayUSA, shows how it's done. Starting with an explanation of the tools required, from the action blocks to a barrel wrench, the use of each tool is explained in depth. The installation of the ejection port cover, forward assist, front and rear sights, and barrel are all covered. In this build, a demonstration of how to check headspace is shown before assembling the bolt and carrier. Next, the delta ring is installed on the barrel, and the barrel fastened to the upper receiver. Finally, the installation of the gas tube and compensator are detailed.
For this and other MidwayUSA videos visit the MidwayUSA Video Library:
www.midwayusa.com/video-library

Пікірлер: 334

@writeinfosetup 10 жыл бұрын

This guy cracks me up...."the upper receiver is easier to build than a lower receiver"...30 seconds into him displaying his tools I started looking to buy a complete upper receiver :-)

@FoodFolksandGuns 10 жыл бұрын

lol! That's exactly what I'm thinking right now. Those tools will set me back at least a hundred bucks. I want to build a retro Vietnam era A1 build but now I say f__k it, I'll just go to Fulton Armory and buy one that's period correct and ready to put on a lower.

@Paul.atherton 10 жыл бұрын

these are just suggested tools ive seen somone get by with a multi too castle and armorers tool

@chubmcy17 10 жыл бұрын

Haha dude you dont need all those tools. He has like 5 types of each tool. Chances are you already have all the tools you need.

@appleh8terguy 10 жыл бұрын

he just trying to sell stuff

@TOTAL1337MAYHEM 10 жыл бұрын

Yall are a bunch of whiny bitches.

@dekebell3307 9 жыл бұрын

I've built my share of these rifles, but still enjoy the heck out of watching the old man do this. Yes, he's selling his tools, but he's still cool.

@bulgogi19 10 жыл бұрын

Great videos from Midway as always. Larry is like the Mr. Rogers of gunsmithing, polite, likable and a badass.

@fossilguybmf4210 10 жыл бұрын

First time for me to ever comment on youtube. Let me say this about MISTER Potterfield, , when you buy something from Midwayusa and have a problem even if it is YOUR FAULT (wrong part you ordered etc) Larry will make it right. He will even talk to you on the phone and help you do a repair. Treats all his customers with respect. The man is brilliant, and that is one of the few things I respect on this world. If you think hes old, uses too many tools, or repeats himself too much.... he is sharing his wealth of experience for FREE. stop whining, put your playstation remote down, quit texting while driving and if your lucky you may live to be his age!

@Ray-fc8bo 6 жыл бұрын

I agree.....his videos are how to do it right! He doesn't tape his pliers and squeeze a pin in....he uses the correct tool.

@ethanhill6544 6 жыл бұрын

absolotluty hes the best guy in the big side of the gun industry, and remember larry has forgot more about gunsmithing than we will ever know

@showalk 6 жыл бұрын

What does having a Playstation have to do with anything? lol

@captainron8231 5 жыл бұрын

Hey fossilguy... you are wrong! I had an order, about $800 worth that good old Mister Potterfield let me eat over $300 dollars worth of reloading components on. What happened was their shipping department just threw in a container of Frankford Arsenal's lead flux I had ordered without packing it in a separate bag or even tapping the lid on securely. The lid unscrewed itself during shipping and spilled all over the contents of the box. I called Midway less than an hour after the box was delivered to my porch and the rep said they would send another container of lead flux. I unboxed and cleaned everything up and vacuumed clean all the flux. I threw the one hundred .338 Lapua Mag cases and the match bullets up on my reloading shelves and thought nothing more of it........ Until I grabbed that $200+ box of 338 brass to reload. Even after the meticulous clean up job the brass had corroded so bad it was unusable. The bullets were just as bad. In fact, almost everything with metal had corroded. I immediately called Midway and they said it had been to long a time to do anything about.. I explained that as a reloader we often buy our components in advance of its use which I'm sure anyone in the industry can understand..... but hey, we can't help you..... So, Mr. Customer... you loose! So hey, fossilface... stop sucking up and saying things you know nothing about..

@captainron8231 5 жыл бұрын

@Merman @Merman... Hi there. I think it was about 12 months or so. It could have been a year and a half.. What ever it was, the time frame isn't as important as the lack of customer service. I own close to a hundred guns and don't get to reloading for some of them for years at a time. I buy components in advance and have many components that have been sitting on my shelves or powder locker for 5 years or more. Brass and bullets don't deteriorate unless you do something to cause them to. If Midway had warned me.. "hey there, that flux compound will really screw up any components it contacts", and I did nothing about it.. I'd have to accept the fault as my own.. But, it wasn't me that packed the box wrong. In fact, as soon as I realized each problem that developed from the ordeal I contacted Midway. Their records indicated that and they still offered no recourse.. No matter. I now shop online with Natchess and a few others that seem to have a better customer response.. Now if your a relative or friend of Mr Potterfield's I can understand your insinuation that the timeframe has any big relevance here.. And it would if I had initiated the problem. I didn't.. Who ever packed the order did and if my initial call had been handed off to the right person they could have had me return the order right then and there.. Lesson learned.. Good day..

@JgM-ie5jy 8 жыл бұрын

No anti-seize on the compensator threads ? Amazing how, with all the oil and grease, you manage to keep your hands clean at all times. Paying attention to details makes for a neater video, along with the fact that there is no hesitation, approximate or trial-and-error hand moves, etc. Very slick and professional. Very good information on the tools as well.

@Superman-xr1oh 7 жыл бұрын

J. gM He's probably done it in his sleep.

@samwagner31 8 жыл бұрын

Gotta love a CEO with callused hands!

@willnewberry8369 3 жыл бұрын

Mr. Potterfield, thank you for educating me (us) on the proper way to build an ar 15 as I'm new to this and still learning. I really appreciate your good attitude, wealth of knowledge and willingness to share it. I'd also like to commend you for your fast response to orders and they're always exactly what I've wanted, great quality and great service at a competitive price. What everyone expects without hassle and delays. Good day and thanks again sir.

@JC_Young 7 жыл бұрын

By far the most complete, thought out, and descriptive assembly video I've seen. Larry, you sir are a gift. Kinda like the Mr. Rogers of the gun world...except, you know, with a great company that you built...

@ronsmith9251 4 жыл бұрын

I like how he builds an A2 upper from parts.

@docsspot 9 жыл бұрын

i noticed some comments on this series (building an ar upper/lower) that i dont get. i realize you dont need all these tools, as does anyone who would build an upper/lower. yes, midway is trying to sell you stuff. with that being said, this guy has forgotten more about firearms than at least 85% of the people watching this will ever know, including me. he doesnt watch videos, they make them about him. many of the tools shown ARE completely unnecessary, some would be handy and make it a lot easier, in addition, make it a lot easier to prevent marring, knicking, scratching, etc, even if minor. you can use a pair if visegrips to drive a nail, but a hammer sure is nice to have, and i would take a paslode over that, that is all this guy is doing, using the right tools for the job, to do it right with ease, and have the end result be professional, which is what he is. dont know the guy, dont have any affiliation to midway, bought one magazine from them years ago, but it kills me that someone who can tear down their glock thinks they are a gunsmith, at best you are a backyard uncertified armor, and their is big difference. just my .02

@jeffnflintstone 9 жыл бұрын

Well said! There is always some shortcuts. But professional assembly is always a Big Plus. Plus you don't get yourself or someone else injured or Dead by misalignment or other missteps in assembly.

@adrianfirewalker4183 4 жыл бұрын

This is the absolute best instruction I've ever encountered.

@donaldkidwell9752 10 жыл бұрын

Great video and very detailed! You see a lot of young guys putting this professional down, they should keep the dumb comments to themselves and learn a thing or two from guys who have been building AR's longer than they have been around. But I guess they can't help but show their ignorance. And as for all the tools he uses, look at the finished work, not all scuffed up because he's using the right tools for the job. The want to be's always gotta say something.

@wognessmonster6491 9 жыл бұрын

Preach on!

@americanmilitiaman88 5 жыл бұрын

This is the best video out there for assembling an upper and lower. I always share this with anyone wanting to assemble their own. Its not bubba in his garage saying his uncle daddy told him this is the only way.

@teucer4 2 жыл бұрын

I’m sure Larry is someone’s uncle and daddy

@jettrooper3rd 10 жыл бұрын

I absolutely love these videos. Larry seems like such a kind man.

@HeyYou-nt1tl 4 жыл бұрын

The pins never go in as easy as these videos make you think.

@honestabe1940 2 жыл бұрын

Process and detail, great job sir!

@gordonfart8506 3 жыл бұрын

Larry Potter and the Chamber of Nitride

@patrickh9226 8 жыл бұрын

In addition to using these "how to" videos to promote the use of the tools that he sells, Larry is doing this for teaching purposes. He would be exposed to liability if he taught shoddy methods that resulted in a viewer being injured. I don't know how many of his tools some of you could do without and I really don't need to know. He has a double motivation (two perfectly good motivations) for teaching things the way he does.

@DustySquitoNM 9 жыл бұрын

Well made video. You're one of the only videos I've ever seen that actually mentions a torque wrench. Yeah, you can find ways around using a lot of the special tools he lists, but there's no janky work arounds on this video.

@chuckvan1568 8 жыл бұрын

MidwayUSA and Palmetto State Arms are two of my favorite online gun sites. I like Brownells too. And have even found some gun parts and accessories on Amazon. Brownells has good videos too. All of this information is helpful to the gun community even though there are differing opinions on just about everything gun related, it's the diversity that keeps it all interesting. Rock on Larry!

@fireemblemistrash75 Жыл бұрын

I love these videos because some of us want to build old GI/retro builds because we got so sick of fast guy “operator” builds and just want old, classic, battle tested setups

@elcidcampeador9629 2 жыл бұрын

That torque spec cracks me up. Its like saying my vehicle is anything from a moped to a bus

@rifleshooterchannel208 Жыл бұрын

Exactly 😂 I always shoot for 55 ft/lb on that type of barrel nut just to be as median as possible.

@tangero3462 6 жыл бұрын

Yes, you can do it with fewer tools. However, there is an inverse relationship between the time it takes to complete this task and the number of specialized tools you use. There is also an inverse relationship between the number of specialized tools and the amount of profanity it takes to get one of these things assembled.

@charlesmckinley29 4 жыл бұрын

Tangero and how many people commenting have never put anything together more complicated than a sandwich. Thank you for the laugh!

@camerongover8459 3 жыл бұрын

I seriously thought I would never say the words "fuc*ing" and "bit*h" so much while assembling my first build lmao

@jcampbell003 4 жыл бұрын

After seeing this a complete upper for $300 looks like a hell of a deal.

@kennethbailey2616 5 жыл бұрын

Great video and Mr. Potterfield is a class act!

@coldgarden_ 7 жыл бұрын

Thanks for the great video. It gives me confidence that I could do this with the right equipment.

@reddberendes82 9 жыл бұрын

So is this dude the nicest person in the world?

@michaelbearer9453 9 жыл бұрын

Great video, only thing is when using a torque wrench with that kind of adapter the wrench needs to be @ 90 degrees in relation to the adaptor. Other wise the actual torque will be different than what the wrench is set to. Thanks for the awesome video and keep them coming.

@austinbyers1526 8 жыл бұрын

+Michael Bearer I'm glad I wasn't the only one who noticed that.

@coldgarden_ 7 жыл бұрын

Michael Bearer I'm glad you mentioned that.

@carguy76ia2 5 жыл бұрын

I'm glad somebody brought that up. That's a good note for this application, or anybody using dogbones with a torque wrench.

@johnbuffinton7324 3 жыл бұрын

I was about to comment about that too, he overtorqued the barrel nut

@TheSailingwoodworker 2 жыл бұрын

I can't believe how many people don't understand this and see it done wrong in almost all videos when torqueing with an adapter.

@rickcarver9467 11 жыл бұрын

It is to fully seat the round when you load a new magazine. The military teaches to hit it 3 time with the heel of you hand after you charge the first round. This is to assure the round seated if the chamber is a bit dirty. Normally, you would pull the charging lever back and then let go allowing the spring inertia to close the bolt. If silence must be observed for security reasons, you can slowly release tension off the operating lever and then palm the action closed with the forward assist.

@jason60chev 6 жыл бұрын

Hey Larry, re-check your torque wrench usage rules. The barrel wrench, the way you have it on the torque wrench, is acting as an extension and requires recalculation of the torque. However, if you don't like to do simple algebra, turn the barrel wrench so that it is 90 degrees to the torque wrench, then the torque dialed in will be the torque applied.

@stevenhalford3961 2 жыл бұрын

He's never been to AFRAM/P school!

@CarlPapa88 10 ай бұрын

Looks like he used his torque wrench @ 90° there @23:35

@panchovilla1486 9 жыл бұрын

Thank you Mr for that wonderful video you are the man

@Deltaworks23 7 жыл бұрын

I like how he does this all in a clamshell fixture in a vise, triggering all the "hurr durr, muh reaction rod" and the "you'll shear off the index pin if you don't use a barrel clamp" people.

@ldwithrow08 7 жыл бұрын

Actually, my weapon of choice for handling E-clips is a good sized hemostat. Holds as well as a needle nose but you can lock it tight on the clip, lay it on the bench till you need it and install it very easily. I keep a dozen or so assorted size hemostats in the tool box.

@MrKadidle51 7 жыл бұрын

Thanks for this. Everything after 20:00 or something is what I was needing

@1959Edsel 9 жыл бұрын

This video was helpful for my build, but I have to point out that roll pins are the spawn of the devil.

@Oldbmwr100rs 9 жыл бұрын

But that roll pin starter tool looks like it makes it so much easier! If I get more into working on My rifle I might just pick up the small set,looks like a lifesaver.

@barrysmith4989 6 жыл бұрын

The e-clips are actually Beelzebub himself then, I'm fairly certain.

@Element_Z48 3 жыл бұрын

this video was golden then, it's golden now.

@TNPer308 11 жыл бұрын

I love the full length videos you guys do please keep it up (:

@budburr66 5 жыл бұрын

A no B.S. PROPER build. Thanks Larry.

@runstreetsofvegas 10 жыл бұрын

Roll pin starter punch

@johnwallace7694 5 жыл бұрын

wheres my 10 mm socket?

@Armadurapersonal 7 жыл бұрын

Damn I wanted to see the finished rifle!!

@manuelluis9106 Жыл бұрын

Isso sim é um profissional de qualidade usando ferramentas próprias e um cuidado bem meticuloso. Parabéns e um abraço de Portugal felicidades.

@shaunkamark8685 4 жыл бұрын

For a CEO of a multi million dollar company and still gets his hands dirty he’s a COOL OLD CAT!!!

@paramount10987 11 жыл бұрын

That was EXCELLENT!

@americanmilitiaman88 7 жыл бұрын

i like tetra grease. i got a tube of it in 2013. still got more than half of it left. and i clean my guns at least 2 times a month

@hgerrard2745 7 жыл бұрын

LAWRENCE POTTERFIELD YOU RULE

@mr1hanky 11 жыл бұрын

amazing video as always :D

@SmokingSevens 11 жыл бұрын

Good timing with these videos Larry! I have two stripped lowers, and am researching/buying parts for at least one of them. Too bad you guys don't ship to Canada.

@rickcarver9467 11 жыл бұрын

Nice video and good information. I call BS on your barrel nut aligning perfectly with the gas tube port opening on the first try, Larry! Anyone who has ever done this know they never do and you end up tweaking it several attempts before you get it right. That is why the torque spec is so wide.

@Maradnus 3 жыл бұрын

The most American thing I have ever watched

@balzarini51 7 жыл бұрын

when I put together my ar I got an assembled upper and did the lower myself. I'm only 5 minutes into the video and there is no way on earth building the upper is easier than the lower. no freaking way. look at all those tools!

@financingmysteries 7 жыл бұрын

it's easy trust me. he's just showing a complete proper way of building it with the proper tools but half the stuff you don't need. Look up some other videos

@KSkrode 3 жыл бұрын

Larry is the greatest

@MedCityViking 4 жыл бұрын

This video is great, but it would be nice if it were indexed so I could go right to the part I want to watch. Thanks for the help Larry!

@beeleo 2 жыл бұрын

Is that a joke. It IS indexed.

@MedCityViking 2 жыл бұрын

@@beeleo - My comment is a year old and it wasn't indexed at the time. Good job on jumping to conclusions though.

@rickcarver9467 11 жыл бұрын

Same deal. It always gets dirty around the rings and bolt back. Just scrape it off carefully and get as much off as you can. Some guys use a ultrasonic cleaner, but I have never tried that to see if it works better. I soak in Simple Green and then scrape and lightly oil.

@Fisherdave10 11 жыл бұрын

I use a pocket knife to scrape carbon off of the bolt tail. It's much more effective than a brush IMO. When clean, coat the boat tail with a grease that will leave a film when it is burned off. I like Superlube synthetic grease.

@bigred2989 11 жыл бұрын

And at no point in assembling this rifle did you get an urge to kill? Amazing!

@cjanquart 4 жыл бұрын

Interesting way to stake the gas key; never seen in done like that (BCGs I've seen are staked from the outside edge of the gas key).

@billthecosby9877 10 жыл бұрын

The next time I hear "Roll Pin Starter Punch" I'm gonna Roll Pin somebody in the Starter with A Punch.

@RobertMorgan 10 жыл бұрын

Every time I hear it my mind automatically fills in "a pair of needle-nose pliers and the finishing hammer"...

@billthecosby9877 10 жыл бұрын

The things people spend money on these days. Lol With all of the tools this guy has it almost seems possible to go back to 1985 and kick Biff in the nuts. #RollPinFluxCapacitor

@moto_rad 6 жыл бұрын

Starter punches are so nice… why brag about driving a Honda? Get a Cadillac.

@deusvult1633 7 жыл бұрын

You would think from these assembly videos that the AR was more grease than metal lol

@thespiritof76.. 4 жыл бұрын

Good Gawd man, I only have a cordless hand drill and bit set. Thank Goodness I have these two hands, opposable thumbs and a descent set of eyeballs, else I would have bought ALL THEM EXTRA TOOLS.

@robinj.9329 7 ай бұрын

You spent a lot of time on that ancient iron sight from 60 years ago! And I've NEVER seen a builder of the last 30+ years bother to use it! In fact, most of todays receivers couldn't even mount such ancient sights!!!!!

@MrNormanChang 4 жыл бұрын

Thanks very Detail video

@siegfriedobrabender4215 8 жыл бұрын

The torque adapter he is usingon thetorque wrench has to be on a 90 degree angle for a proper torque.

@robcox63 8 жыл бұрын

No it doesn't. The original Colt and military manuals say that the torque is properly read when using both wrenches together.

@tangero3462 6 жыл бұрын

Dude, the range in the manual is 30-80 pounds. That sure sounds like a really precise range to me.

@russellwhite5261 4 жыл бұрын

Fantastic

@brianonthego 6 жыл бұрын

Would have thought Mr. Toolbox would have used a Reaction Rod....

@TransGalGaming 11 жыл бұрын

thanks!

@KrisSays 10 жыл бұрын

Please do the same video for an AR-10 / SR-25! Thanks!

@daltonrumbarger2701 4 жыл бұрын

I wish I could get my bolt to go in the carrier that easy

@emilioaguero5421 9 жыл бұрын

I ´d like to see a video from Mr Potterfield making an 9mm AR 15 TKs

@clubprojects6923 4 жыл бұрын

It seemed like putting the sight together on the original issue rifles is the hardest job ever associated with the AR 15/M16.

@christopherhartline1863 Жыл бұрын

More tools than parts!

@AndrewArndts 11 жыл бұрын

And what was shown was the difference between 40 lvl and 50 lvl Small Arm Repair...

@rickcarver9467 11 жыл бұрын

Several manufactures offer "AR-15 carbon scrapers" designed to make it easier to clean the crud off the carrier. It is not unusual to have to scrape it off.

@terrypaul9648 4 жыл бұрын

NOBODY WHO KNOWS JACK S...... WOULD SUGGEST YOU CLEAN A PRECISION PIECE OF A FIREARM WITH A METAL SCRAPER. OH,WELL I GUESS IT GIVES THEM MORE "JUNK" TO SELL. PROPER CLEANING NEVER INVOLVES THE PRIMITIVE USE OF METAL SCRAPERS.

@de_41 7 жыл бұрын

My firing pin isn't quite as snug in there as yours. At 19:15 where you pull back on the firing pin with the small tool and it doesn't seem to move. Mine moves pretty easily with just my fingers. Maybe 1/4" or a little more. Is that bad?

@RubenGarcia-kc3op 6 жыл бұрын

Where does he buys all his tools? Lol Joke aside very nice vid!

@Eaatlife 3 жыл бұрын

I feel like with all the money that goes into all the tools, I mite as well but a complete upper. Probably all adds up to the same.

@Bladsmith 3 жыл бұрын

The funny thing about tools is you can use them more than once and for more than one task

@eatit122 Жыл бұрын

Would like to see the complete and proper assembly of a AR15 lower video, if KZfaq will not allow it then please post it to Rumble.

@joemontgomery6658 Жыл бұрын

They have the lower build on their website

@slthbob 6 жыл бұрын

14:10 ....ouch... use a punch to install the extractor pin.... I guess I was spoiled with my m16/m4... I'm used to that part being held in place with friction only and being removeable with my fingers :(

@Dovoski 3 жыл бұрын

I guess we'll never know how the folks at Midway put handguards on...

@skeptikul270 5 жыл бұрын

Never seen a gas key staked that way before

@gravity98ns 11 жыл бұрын

Thanks marchingbluengold

@ronsmith9251 7 жыл бұрын

Correct me if I'm wrong, but I thought you were supposed to lay down some RTV sealant between the gas key and the bolt carrier? Also you're supposed to keep the barrel nut wrench 90 degrees to the shaft of the torque wrench.

@petelocker3138 10 жыл бұрын

no black o-ring on the extractor aka failure to eject will happen ! / The snap ring that goes over the weld spring has two sides to it ..the sharp side and the round side, the sharp side is supposed to be pointed up towards the end of the barrel. / The gas key must be aligned on the carrier , most manufactures like micro best has slop in allen head screw holes allowing the gas key to twist left or right a couple of thousands.

@frankmoralesiii3180 7 жыл бұрын

Yes he will most likely use all these tools, but it is not necessary. You could get by with the following Magwell Block AR Receiver Vise Torque Wrench Armorer's Wrench Roll Pin Punch Punch Set Screw Driver (Flat Head) File Hammer Needle Nose Pliers Wheeler Bench Block Aero Shell M3 Grease

@jessewilliamson6596 5 жыл бұрын

Great video thanks!!! Heres a question though. I have a 2 piece drop in quad rail hand guard. The top of the hand guard rail does not align side to side. Up and down is perfect but it's off side to side. I called the manufacture and they suggested to torque the barrel nut some more to see if that will align it. The gas tube looks to be nice and straight with the barrel nut and receiver just by eyeballing it. Don't have the tools to check everything but, wouldn't tightening the barrel nut bind the gas tube since it looks like it's already aligned straight?

@beeleo 2 жыл бұрын

No. But that won't fix your issue either.

@Don19831 8 жыл бұрын

What is the blue, disk-shaped device that the bolt carrier is resting on while he is working on the bolt carrier group? It was not listed at the beginning of the video when the tools were displayed. I can't find it on the Midway USA site.

@Don19831 8 жыл бұрын

Thanks!

@cotton1of2 10 жыл бұрын

which headspace gauges are in the video. I have never seen that design.

@dragonusmc0311 11 жыл бұрын

The forward assist is found commonly on AR-15 rifle derivatives, such as the M16 assault rifle, and is usually located near the bolt closure, that when hit will push the bolt carrier forward, ensuring that the bolt is locked.

@nicholasavallestero0791 Жыл бұрын

23:00 is it necessary to take account for the tool length when making the calculation for the torque setting on the wrench or just set it to spec? Just curious

@JgM-ie5jy 8 жыл бұрын

at 26:02 "... the gas tube does not bind in the key..." How do you recover if this is not the case ?

@MrBfc777will 11 жыл бұрын

@ Midway do you have a complete tool kit to do this job?

@dsbiddle 4 жыл бұрын

When he said you need a little muscle and flexed on us, I got scared.

@One_of_Many750 5 ай бұрын

Lowers Seem A Lot Less Complicated To Build From Stripped.

@cncfxstb 10 жыл бұрын

Torque wrench and nut wrench should be at 90 degrees when tightening or the torque reading will be off.

@milesokelly8483 9 жыл бұрын

he said liberally haha get it hahaha

@CarlPapa88 10 ай бұрын

Noob here & just asking to ask the community. I bought a 14oz tube of multi-purpose lith grease from TSC a year ago. Just used a tiny bit on some O-rings. Their website says "Doesn't contain extreme pressure additives" & Flash point of 410°F. Am I correct to assume that grease is just grease for an AR assembly? Doesn't have to be some specialty white lithium gun grease.

@autumnfragrance7185 4 жыл бұрын

Easier to assemble than the lower ??? Does he mine the aluminum ore for the lower receiver ?!

@fatefinger 4 жыл бұрын

I noticed the barrel slid easily in the upper receiver. I have watched other videos where it has to be hammered in with a rubber mallet. Does being loose or tight that affect accuracy?

@beeleo 2 жыл бұрын

No. And it's all tolerances.