Big fan of the two upper thought process. Mk18 & Mk 12 11.5” & Mk 12 12.5” & Mk 12 13.7/9” & Mk 12 14.5” & Mk 12 16” and Mk 12 Mk 12 & Mk 12 20” and Mk 12 You really can’t go wrong with any of these combos.

Anyone else a little annoyed how much Roy interrupts Eric mid thought? Idk. Great video though.

Can't wait to get out and train with my 7.5 inch 5.56 with a cookie cutter brake and a 5-35X55 scope.

Former US Army Ranger and spec ops combat medic here. (I also have a medical degree and worked quite a few years in critical care) I've actually been shot through the thigh with an AK. I bled out half my blood volume in under a minute. You've got about 2 Liters of blood per 60 lbs of body weight. I weighed about 180 lbs at the time and the EBL or Estimated Blood Loss was 2-3 liters. Tourniquet was applied roughly 45 seconds after i was shot. I couldn't put my own tourniquet on despite having it right there in my leg bag/IFAK because i was also shot through my R wrist and when i went to unzip the leg bag/IFAK, my R wrist just flopped around and didn't work for me. I say all that to say this... if you dick around putting a tourniquet on someone like the end of this video shows, you may very well see them bleed out and die. Have a big ass loop set up in your tourniquet before hand and put it around the foot and move it quick as you can up the leg until you're a good 4-6" above the highest point of the wound and tighten that thing down til the bleeding stops and then some. Gen7 should be strong enough that you can really crank them down without having to worry about the polymer twist stick breaking. The tourniquet is going to hurt like a son of a bitch regardless. Like we always say in the SOF medic world, "PAIN, is the patients problem". IF you take the whole damn thing apart and fool around like that trying to put it back together you WILL lose precious seconds and perhaps a life. YOU'RE WELCOME Also... all this talk about 12.5 and 13.7" AR15's in 5.56 being your "all around"/"go to" set ups... sounds like insanity. I'd never go shorter than 14.5 or honestly, 16". In fact, i'd probably prefer 18". 16" middy in a CHF Chrome lined kind of upper is probably the best all around. 77 grain OTM's if you can afford them. 8x optic minimum with Christmas tree reticle and offset dot and or irons. You want to have the capability to hit targets at 800 yards MINIMUM IMHO. Always carry an extra bolt and firing pin in the grip and a small tube of CLP. I like any good 2 stage trigger and some good single stage triggers. The CMC flat 2 stage 2lb/2lb is a really nice, fast, good for close up and DMR work trigger. There are a lot of good options out there. Even the ALG ACT will get the job done... including at 750 yards etc. Maximize LETHALITY. Maximize CAPABILITY. You really don't know WHERE you'll end up in a crisis situation or where your enemy will attack you from. If you're pinned down and don't have the range to effectively return fire.. you're screwed. Don't screw yourself. Don't be ignorant. Don't be arrogant with your little trendy 12.5 AR's. Wake yourselves up and THINK.

I've just assembled a 12.5" upper in 6mm ARC. I have a Nightforce ATACR LPVO, an Aimpoint ACRO on a Badger Ordnance mount, an OSS (HUX WRX) 30 cal can, a Radian Mod 1 build kit, Geissele SSA-EX Lightning Bow trigger, a Mos-Tek custom 12.5" bull barrel in 6ARC, an ATPIAL laser, a Surefire weapon light, a Sharps Rifle Company BCG, a JP Enterprises captured spring system, and Magpul furniture. She's a little heavy, but well balanced. This thing rocks. This has quickly become my all around SHTF rig.

BCM KD4 upper with 3 prong flash hider, Vortex Razor 1-6, Lunar Concepts Baseline 2 point sling, Surefire Scout light, and Harris bipod. That K.I.S.S. setup worked for me during a AMTAC and Defoor course out to 600+ yards and a couple of hunting trips.

Most basic but my favorite is a BCM upper with an Aero lower and geissele trigger. Bang for your buck and gets the job done well

These new vids are great. Just what we need! Thank

I use LMT lowers and custom built 14.5 upper. By switching from Eotech to aimpont and from a B5 to a magpul stock I shed a half pound

I was actually shocked, i did a BCM 14.5 medium weight fluted barrel. And its INCREDIBLY well balanced like you guys said. It feels about the same as my 11.5 gov profile as far as manuevering aside from length.

Good to see Roy on here! I’m from here and love to see this and all my gun people in central Florida! Time for me to tighten up and start training with these guys!

Been shooting a 13.7 with an ACOG, a top dot, and my sandman S for some time now, definitely my favorite do it all set up.

I run a BCM rifle with a 14.5 pinned and welded with a Surefire Warcomp, Socom MINI can, cloud defense rein light and EOtech exps2 optic.

10.3 all day baby! Btw, that scoped carbine class is awesome. I've been to a bunch of their trainings and these guys are top notch.

I’m a old Ranger but I love your content…I’m in Texas I can’t come out but, Great Work!!!! Tri-Arc System’s 13.9 👍

Like you two, I also live in Florida and am used to the environment. In my personal experience, my suppressed BCM 11.5 is the "grab and go" option for me. It does what I need it to do in the ranges that are realistic for me to be shooting to. Are there things that it isn't really suited towards? Yes, absolutely. But, it is the rifle that I feel most confident with. These are always fun videos & discussions, and I have watched you two for a while now. I am now subscribed and plan on taking the short drive to visit you guys some day soon. Keep up the great content.

I just complete my first buil. Aero precision 14.5, rise armament trigger, aero pro BCG, lvpo 1-6 with backup iron sights.

I love coming back and rewatching these. So much info that gets missed on the first watch. Currently, building out my 13.7 GPR. Next on the list is to build out a .300BLK (possibly with night vision capability) upper to swap it around with.

I love my self-tuned AR15. I have a BA 12.3 mid-length with tubbs flatwire and H3 buffer. It cycles everything I feed it, 55-77grn whether supressed or not. #ThisIsTheWay

As a southpaw myself, I'd like to see some of how you set up your rifles and kit as a lefty. Always curious to see new ideas!

I am really liking my 14.5 w/ RC2 and a "best"PVO. It really gets the job done. I need to replace the barrel on my 10.5, to get the short upper back on line, but for a one rifle to do it all, a well gassed, suppressed 14.5 is really nice.

"13.7-13.9 is my long gun" lol 😂. To me 16 inches to me is my short gun i just refuse to compromise on lethality and a 20 inch upper is my long gun.

18” 308, 16” DD, 11.5” DD and 9” 300 BO . Getting Huxwrk 7.62 Ti soon hopefully! Cheers to content guys!❤

BCM KD4 upper with 7.7 twist is my friend's choice. As for me, I like LWRCi with the spiral fluted barrels and short stroke system.

11.5 BCM MCMR & a 14.5 Daniel Defense RIS 2…those have been my go to rifles for the last 4 years🔨

White light, IR laser/illum, AND a dedicated IR light is overkill imo. A few things I've found that helped is going to a vampire IR/white WML, changing from standard size muzzle device to a kurz version, running a kurz kit (YHM) on the can itself, and changing barrel profile. This isn't something I see brought up a lot, but going from the typical gov't profile front-heavy barrel to something like a Criterion Core which is tapered profile can really help the weight distribution and feels lighter even if it's technically same weight.

Currently own a 11.5 and a new 13.7 SOLGW. I’m also a near by in a neighboring county, and definitley want to get down to train with you guy’s soon. Glad to find you here!

Awesome video. For me it’s a 12.5” as well. Mines a BCM. Currently waiting on my form 1 to get approved but it’s the best middle ground barrel length for me.

I’ve got two sharps bros lowers both with Geissele uppers 10.3 and 11.5 sitting on top - SBR’d. Working on optics for both

I put together a Gordon Carbine upper receiver. I did something different I used the PRI carbine length handguard to free float the barrel. My barrel is a Noveske 12.5" CHF chrome lined. I'm really liking the 12.5" length to do everything with. I'm able to hit steel silhouette targets at 400 yds effectively. My out the door upper is my 12.5" with my 1-6 lpvo on it and with my suppressor.

When it comes to brands I really wouldn’t know what the best would be but I do prefer using Bravo Companies products more than most when it comes to building an AR that fits your needs. I only use one lower with an A2 fixed stock and for uppers I have two for different reasoning. A Dissipator upper for closer range’s and quick shots for urban and slightly woodland areas and a SPR upper with a scope and bipod for longer to medium range’s in RECCE use

Custom 11.5 SBR (mostly BCM & Geissele parts, but a triarc barrel). VLTOR A5H3, T2 & G33 on Unity mounts, Modlite OKW, Surefire RC2. Serves me well both personally & professionally

I did like my suppressed MK18 until I got the PWS MK111 MOD2 and I’m very happy with it. I do like how the MK18 is insanely smooth but the PWS with adjustable gas set up is a better set up for me. Great vids guys, you guys do a great job. I think a class in my future with you gents.

My go to will always be an 18" upper. Whether it's cold hammer forged or stainless, what type of optic I'm using, and what kind of additions I have on it may vary. But I'm always going to go with an 18" upper and a Wilson Combat low mass bcg. Softer shooting, more velocity, and a bit quieter are more important factors to me than portability. People act like a corner can't be pied with anything over a 16" barrel. Some believe 16" is too long.

"im a normal person!" hahaha 10\10 cast my dudes

Really liked this video, liked, subscribed, and commented. Lets go!

At first I just wanted a plain-jane, simple upper. I got one with some railing on top, but has a trapezoidal plastic fore end. Later, I wanted something I could put off set sights and a light on, so I got a quad rail upper. I got a third upper for fun. I actually call it my fun gun. Its a quad rail with anything and everything I can attach to it. Mostly rejects form my other upper. Looks incredibly cool, weighs as much as I do, but keeps me more entertained than saturday morning cartoons ever could. But still, the second upper is my go-to.

Great video

With my 12.5- and 14.5-inch guns, I am running Frankin builds using SOLGW uppers and lowers with Hodge rails, barrels and BCG's. Been extremely happy with overall shootability, accuracy, durability and fitment. I also run an 18-inch upper that's assembled using a 18" (Criterion) Compass Engineering Barrel with a SOLGW upper and a 16.75 Zev Wedge Lock rail. As far as optics, I run a Aimpoint Comp M5 with an Aimpoint 6X Magnifier on Unity mounts. The 6x allows you to see better, but it is also longer so it helps with the eye relief. I know its heaver, but because of this the juice is worth the squeeze. The 12.5 has a MAWL and a Modlite for white light. On the 14.5 I run a 1x6 Razor with an ACRO mounted at the 12 o'clock. The 14.5 has a PEQ-15 and also uses a Modlite. The 18" upper has a 2x10 Credo and ACRO on an offset mount along with a Surefire Turbo light. My newsiest addition is an upper assembled with a Rosco 13.9 Greenline Tactical barrel with a Ripcord 1.5 13.13 rail. Im really liking it and the Ripcord rail is a winner for sure. If I had to pick one it would be the 12.5. Thanks for sharing your rigs and methodology. Iron sharpens iron and I appreciate the work put into the channel for the viewers.

I've been running a 12.5 for the past 4 years and got an adjustable gasblock on a carbine length system. It's got a bcm quad 12", and I've been running a eotech 512 on it for the past 2 years. I just got my socom 300 sps can last year, and it's pretty shweet.

My one go to, would be my ADM 12.5 on a Geissele lower. Unity riser with a 4T on top. Magnifier as well. Performs well.

Love my 12.5!

My fav in the rifle game is my 13.9 SOLGW in my FCD upper with canted RMR and the new Leupold 1-5 with the Mod lite and YHM Turbo K suppressor on it. Crazy light weight and I can crush 800 yard shots with consistently. I strip the light off and run it in my run and gun events as well.

Big fan of this

I like the 12.5 upper I put together. Running a Rosco k9 12.5 with their patrol length gas system. Did a triarc pinned gas block, kak 4 inch flash hider pin and weld, and a 11.5 inch midwest industries combat rail, BCM mod 3b charging handle, eotech xps2, streamlight protac light, and Midwest industries combat fixed sights. The BCG is a young manufacturing and the receiver is an Anderson I believe. Mainly just parts I slowly compiled and already had laying around and it’s a great shooter but she chonky for sure. Great video

I started using some of the foxtrot Mike uppers that are fully self-contained can fire with stock folded. A HK style charging handle. The 102 model has locking charging handle takes traditional AK-47 magazines and does the HK SLAP CHARGING. After the initial couple hundred round break in. I started feeding it handloads from 35 Grain on up to 100 grain subsonic. 1000 rounds and big was only a little dirty. It does not need a traditional AR buffer tube and spring and makes a perfect truck or back pack gun. I have one in a 19in backpack. Many folding stock options to shed weight. Strike Industries offer folding stock that folds to either side and locked. Also is one second quick detach and attach. I also like that Foxtrot Mike came out with there own folding stock that's tough enough breach doors or a old school upper but stroke to the chin. You can literally stand on it across 2x4s and holds solid. But folds easy when you want. They even have a AR HK AK hybrid. Once I got used to it it's so much easier and faster to operate than a AR. With a bad lever your strong hand keeps gun and eyes on target while clearing a jam.

I like that the multi dot eo tech got some love

BCM QRF 16" with my EXPS3 and G30 flip up magnifier would be my go to! Great content keep up the videos!

I run Aero Precision uppers, lowers and enhanced hand guards, and Ballistic Advantage barrels. I run 9310 bolts, and Radian charging handles. I pick out every single part and build them myself. Even my .450 build has a GLFA barrel, and a Tromix bolt. It works for me at least.

i was running a 10.3 for a while and it was my first build, but i just recently started an 11.5 with a knights urx4 rail and 18" mk12 build and those will be my new go to setups

Wow, the one dude I really want to listen to almost can’t get a word in edge wise! Other wise a really valuable video. It’s lucky that they seem to be buds.

If i had to grab one it would be my Geissele SD 11.5" with Steiner 1x4. It's not my fav, but it is tough , the optic is great, it's been very reliable. Works well with my vox s .

I've got mostly 14.5s but my current favorite is an 18. I think the 13.something to 14.5 is a good "all around" fighting rifle. Shorter than that is a specialty case. I dig the 18 because that rifle length gas system is so reliable and controllable. I kind of wish I'd gone with the 20 though, since that barrel length just seems to do things that shorter barrels don't, especially in terms of terminal ballistics.

Been using my personal suppressed MK18 for police work for a few years now, best move l ever made.

Great video fellas

I put my own upper receivers together. I use ZEV uppers, Noveske BCG's, and Noveske barrel's with head spaced bolt's. To include my AR-10's.

I have three 16" uppers right now. Two Radical Firearms RF-15 uppers. One chambered in .223Rem/5.56 NATO with a full length M-LOK handguard, an NcSTAR 1x25 red dot, polymer hop up angled iron sights, a UTG vertical grip, a toughsoul rechargeable flashlight, a QD mount for my sling, and a UUQ red laser sight. The second upper is chambered in .300 Blackout with a 5-6 inch NcSTAR quad rail handguard, aluminum angled iron sights, A 4-12x50 UUQ rifle scope, and a Magpul MOE RVG vertical grip. No lights or lasers mounted on it. Then lastly is a Bushmaster MOD.XM15-E2S chambered in .223Rem/5.56 NATO sporting a 5-6 inch polymer Magpul handguard with 3 M-LOK points, a UUQ red dot sight, another Toughsoul rechargeable flashlight, as well as another UTG vertical grip. No laser or angled irons on it. All three uppers of course have an A2 flash hider, as well as your basic bolt carrier groups, charging handles, and forward assist devices. No fancy shit here... yet.

My mind has changed over time as well mostly driven by ballistics and ammo options. Love my 10.5 but moving to a 12.5” piston on my LMT and building a 14.5” w criterion core barrel middy for a scoped gun. Mostly trees around here with cattle farms interspersed thus 100-400yard possible engagements. Also run a Huxwrx for fresh air. Enjoy your dialogue

Baer standards and Bill drill are probably my 2 favorite. The Baer is a good way of quickly estimating overall skill level as it incorporates a reload. Hence the “standard” in the name.

My go to is my 12.7" B&T APC223. I've got a qd 5x eotech and an MPS, peq15, and SF600.

Nice that the uppers, rifles or pistols, can be shipped right to one's door without dealing with an FFL or the ATF forms.

Running a custom built Spikes lower with ambi controls. Upper is a BCM 16” which I swapped the upper with my Stag LH receiver and bolt. D-Bap A3 with a Surefire Scout.

KAC sr15 upper (14.5 inch) on an LMT lower + geissele trigger is an unbeatable combination. I couldn't imagine running another AR.

The two I decided to go with, (what I actually have at the moment) an 18" and a 12.5"

DD mk18 10.3 with Fa556-212DE suppressor, Eotech Exps3 w/magnifier, Peq15, tango down full size foregrip, PRI gas buster, Geissele SSA-E, B5 Sopmod stock, KAC Taupe A2, Magpul v3 Pmags.

With the lack of the brace’s, there is no fricken way I’m going to send my information and register my firearm with the federal government. It’s bad enough they are going around to gun shops and getting the information from the shops. 14.5 13.9 is the only way.

11.5 SR15 upper on radian lower, eotech with mag (both on unity mounts) modlite, surefire rc2 waiting on new hux

WOW! “What light COVERS are you using - bungee lines”. Great light discipline control !!!

My do it all rifle is a Block II ish 14.5, Eotech on unity, 3x magnifier, surefire light and IR laser.

BCM 14.5 pinned with my rugged razor and plxc 1-8, with cloud defense owl.

With a light weight K-can its really hard to go wrong with a 14.5", it effectively covers 95% of the shooting spectrum in my opinion. Slap a acog+rmr on it and the rifle will likely outlive its owner.

My go to is my PWS 14.5 with my vortex 1 to 10 ffp lpvo on a Unity fast mount also with the holosun HS507C red dot on the 45. Also with a surfire vampire light

My jack of all trades, DO-IT-ALL setup is a 14.5 Geissele Super Duty. 1-6 LPVO, offset enclosed emitter red dot in an Arisaka mount, Cloud Rein 3.0. The thing is just bombproof. 1-1.5 MOA all day with basically any ammo. Tighter with good ammo. My main "duty loads" are 77gr OTM, and 62gr Bonded Soft Points. (Federal TBBC and Speer Gold Dots.)

I got my 14.5 BCM medium weight barrel fluted upper. Love it. My go too

- 13.9 Daniel Defense w/ Geissele mk16 handguard. - 9” SOLGW .300 blk.

14.5 is still the best overall fighter. I've just seen them handle so much. But if I'm only grabbing one it'll be my 12.5 with 1-6 sfp. With quad rail of course.

As long as it goes boom when the trigger is pulled ,you’re off to a good start .

A shorty for in-home/neighborhood operations, and a long-boy for longer-range accuracy or getting better terminal ballistics for midrange work.

13.7-14.5” lightweight CHF CL barrel pinned to 16”, BCM 12” quad rail, +/- Surefire Mini2, and topped with the NX8 FC-DMx. Essentially a Block2 M4A1 on a diet…lighter yet still durable and very capable. Able to perform reliably in freezing and scorching temps using a variety of factory ammo. Able to cross state lines freely and legally.

My overall 1 gun 13.7 midlength pencil barreled lightweight carbine. Primary arms 5x prism scope with piggy backed Holosun eps. Using the LWRC ultra compact stock and receiver extension, it get a very short, handy rifle that has good long range and short range capability that’s easy to maneuver. With an adjustable gas block and YHM turbo K with kurz kit. A little longer than a mk 18 but better velocity, less wear on parts and longer range. I couldn’t be happier

One rifle- block 2 sopmod 14.5 Two rifles- Mk12 Mod H and URGI 11.5.

Spr/dmr, seekins precision dmr upper with 20in criterion barrel, bcm flash hider comp thingy, b5 systems prescion stock, ssae trugger and atlas bipod. Topped with a vortex 3-18 stroke eagle mil reticle. Love ma musket 👌

Since quality ARs are quite expensive in Europe, I went for one do-all rifle from the start. 12.5 piston with EXPS and 5x. 18" SPR would be my 2nd upper if I ever went for it.

Would be interested in hearing your guys thoughts on piston systems such as PWS, Bren2 Ms, Spear LT etc…

Short gun is an 11.5 BCM running a BCM QRF, Streamlight, Eotech XPS3 with A5 buffer system. Long gun is a BCM 14.5 middy with 12" RIS 2, 1- 6 LPVO, MBUS Pro sights and a Streamlight.

Whats up from palm beach county? Thanks for the videos and hard work!

I just ordered the new Daniel Defense WPSM4A1 Can’t wait to get it

I built a 13.7 with a PA 3x Micro prism with offset iron sights. That is my go gun.

first pick, my 13.5 lpvo, suppressed with a IR laser/ light. Second pick, a 16" with 2.5-10x44 scope. My go to, first pick is my 13.5. It has NV capabilities over the other rifle. Both work great and its a hard decision.

3 uppers, mk18, mk12 and and any length 7.62x39 with all spare essential parts of course.

12.5 hodge defense with triarc wedge lock on DD SBR lower and Aimpoint comp 5 (add a turbo k when needed). 11.5 CQB full KAC with Raid XE, Sure turbo mini, sico omega, Aimpoint T2, 14.5 KAC w LMT lower, nx8 with Aimpoint T1 12 o’clock, Mawl, modlite and turbo K can.

I shoot in a weekly 3 Gun league. Not tactical, but it is shooting. My rifle is a 16” pencil profile carbine gas from Rosco with pretty much all Aero parts besides that. Dead Air Nomad 30 can. I have the gas adjusted to be smooth as silk with M193, but it can be a touch sketch with pud loaded .223. Just an EOTech up top, making shots to 200 yards on reduced torsos. We don’t have a JTAC ranch here in MI, but my home range, Blue Water Sportsman’s Association, does have a lot of good dudes that actually shoot comps and practice in their gear.

Interesting this pops up now, I’ve been researching uppers and barrels and lengths the last day of so.. thinking about switching from 16” to 13.7 or 13.9

When it comes to AR’s I enjoy “Clone” AR’s. But I’m a long range bolt guy by heart. I have 3 AR’s to cover the bases. Mk18 block 2 for close quarters, socom m4a1 block 2 for general purpose, and a mk12 for long range. And man I love the Sig 77gr 5.56 for the mk12. It is dead on at 800 yards repeatidly

8 in 300 blackout and a 13.7 5.56

Genesis Arms 'Gen 12' shotgun and 8.6 Blackout and .308 upper to swap on the fly. Make my fuckn day.

Waiting for the new KAC KS1 in 13.7……I like an 11.5 for close quarters and 14.5 for a little more reach….so that 13.7 seems the perfect balance…..can’t wait to try it out…..

You had me at the awkward stare😂😂😂

I have one rifle with a 12.5 rosco and I’m in love.

As a Californian I'm forced to stay at 16 inches for legality, so both my ARs are 16in. BCM ELW upper with a T2 and g33 is my grab and go girl. Then my glass gun is a Rosco purebred barreled Franken build with a bipod and razor gen2. The rosco barrel has been awesome and the lightweight BCM is a breeze to carry around.