Wow that's outstanding customer service! Did you use this jig?

I did the exact same thing with my 14.5" Criterion .223 Wylde barrel, though I suffered no loss in the accuracy department. Used a Geissele rail/gas block and sent it to ADCO for a "bomb-proof" installation of the gas block which involves pinning and 2 set screws. I think the biggest thing is to have it done by someone who really knows what they're doing. Can also vouch for Criterions customer service. I have yet to find a better company to do business with in the firearms industry.

Wow, what a great company. Definitely on my list for my next build.

Liar

@@robertsalas3984when metal heats up it expands the thick of a barrel greatly negates this but the area near the bore thats been drilled is obviously thinner which causes that entire effected area to be out a whack with the rest of the barrel. Think of it like driving fast on iced roads and then going over a speedbump. Thats why i just leave it at dimpling.

+rickholloway1000 You are welcome!

+tanakattack Thanks! I am glad you like them.

+Daniel Stein Very cool. Thanks for doing that!

And that is why it has a square top so that it fits a tap handle.

Absolutely......I agree.....ream by hand.....

Even dimpling the gas block robs some accuracy. I have a comp build that is built for accuracy. The set screws on the gb are threadlocked. Thats it. Multiple comps and thousands (4900) of rounds later, no problems, no misfires, jams, etc

I havent noticed. Decrease in axcuracy after I dimpled my barrel.

+Stebolicious I know! I always enjoy supporting local companies!

BRDE is basically my workbench. 😁

+Stanton Taylor Thank you for the kind words. I am happy to help!

i agree I'm trying this myself small steps but open to learn

nsz85 same for me, I decided to build my first AR15,and by watching you and learning I have built several now.

+rupert gumban Thank you and Merry Christmas to you as well!

You are welcome :-)

I used blue loctite one time, and loctite spread behind crevices of the gas block due to my over excessive use, and it pinned it so hard, I had to use the hammer to remove the gas block, and that's after heating it up with blow torch for good minute. Yet it didn't work, I had to put my upper (without BCG) into the oven at 350 F. Well...then I finally got it off. Don't overthink it, don't use too much loctite, but I would dimple the barrel for safety, as I did. But that will likely void your warranty. So yeah.

thank youCris!!!

@@righteousone8454 How much loctite did you use and Where'd you apply it? I ask because I removed one setscrew from the one that's dimpled, from a complete upper I bought, then put loctite on the screw and reinstalled it. Am I anywhere near what you did?

+docken dodson Awesome! I am glad you enjoyed it.

+Coy Collins Thanks!

Should the pin be flush with the freshly-reamed hole on the other side (the opposite side of the one he's drilling from in this video) when you start to hammer the pin in?

Der Fliegende Holländer It's relatively inconsequential regarding the pin starting position, so long as it's driven in an appropriate depth to engage the taper fully. That can only be gauged by the installer. Hard to see in a video. Some systems use self locking roll pins and can be equally as effective. Easier to drill for, too.

jamesp81 nitriding is just a surface treatment of the steel where nitrogen is introduced to the molecular structure of the steel. Once you break through the surface it's unhardened for the most part and should be easy to drill

Its getting through the surface thats the bear. Once you break through, its time for a new bit.

Cobalt drill after knocking the nitride coating off with a ziz-wheel. Works every time, no prob... P.S.: make sure it's a SHARP drill bit

Yes they do it's a 2E pro gas block jig E (0.750 daniel defense mk12

+RhinoCable Sure thing!

Not a gunsmith either but I would have to agree. Seems like everyone from Leupold, Trijicon, Aero, Benelli, etc. People dealing with stuff fastened on high recoil type things, including very precision oriented devices like scopes. All say just use the proper torque and you're good to go. No need for Loctite or extra drilling etc. And to be honest, I'd rather have my 80 dollar FAT wrench, or a torque bar for the heavier things, and just check from time to time and make sure everything is tight. Preferable to drilling into my $600 barrel, or stripping Loctited screws in my RDS/Scope. Then either paying a gunsmith, or doing it myself, using a drill to other expensive parts of my gun like Leupold DPP or an equally expensive receiver.

@@lordofentropyWhich is why Trijicon attaches the TA51 mount to their ACOGs with red loctited screws from the factory, right? Because it’s “not necessary.” Seems pretty hypocritical of them

+Albert Ortiz Thank you, I am glad you enjoyed it!

SLR 762 It's a taper pin, with a taper, not uniform dimension across length of pin.

That hand drill is walking all over the place and so are his tolerances and alignment/straightness. If you are going to do something like this you need to have and use a vertical mill or drill press. Otherwise he would have been far better simply dimpling the barrel for the set screws with a jig and staking the the set screws. No way is that going to come loose or walk off. Every mallninja claims otherwise though and have the scenario dreamed up in there heads. If you carelessly throw your weapon around or drop it, you probably won't live very long in a gunfight anyway. Get ran hard....like countless mag dumps? I try to end the fight with as few rounds as possible or a single fired very accurate, well placed shot. If you are in a situation where you are dumping magazine and after magazine you need to step up your game on your accuracy. You can't shoot for shit....obvious by that 1,500 round carbine course you have signed up for and taken. The winner in a gunfight is the first person who produces lethal hits. "Fast is fine, but accuracy is everything!" ~ Wyatt Earp

@John Doe That's an interesting position. While I think that people shouldn't purposefully drop kick their rifles, I have had to drag an M4/GAU-5 for work and crap happens. They get banged around, fall over, and get used as a landing crutch when people get prone in a hurry. People get sloppy when they are tired, hot, stressed, and sweating. I agree that he should use a drill press or at least a simple jig to keep his holes aligned and I did say that dimpling and staking, mostly staking, helps a lot. But the VAST majority of people, including many gunsmiths, think a little loctite is enough and don't peen (stake) their gas blocks. Once a rifle exceeds a slow firing pace this deficiency becomes apparent. As far as not running a rifle hard...that's a stupid comment that makes assumptions that I'm unwilling to abide by. First, nobody is talking about mag dumps, though that will certainly show deficiencies. I am personally unwilling to trust lives to a rifle that hasn't been thoroughly tested in circumstances that reasonably simulate a firefight even if that scenario is highly unlikely. And to bash people for taking good training classes is just willfully ignorant. If accuracy is king... fast repeatable practiced accuracy is imperial and the only way to get that is to get training and to practice. Your statements, other than about the tooling, are impractical and generally disproven by data collected by the FBI and military. Shootouts are rarely at long ranges outside of the military and they generally have a higher than seems reasonable round count. They certainly don't conform with your ideas of being some kind of stalwart six-shooting accuracy master while under stress...but I'm sure that you'll be the exception. Have a nice day. 🙂

@@derrick9653 Mallninjas beat the shit out of their weapons. Military and Law Enforcement doesn't. kzfaq.info/get/bejne/pLOWpJqnqcCmlGQ.html

Colton Dunn I was thinking the same thing. Just don't go so big with the taper bit. And it will fit tighter. And it will take a lot more pressure taps to seat the pin.

You *can* but it’s such a weak way to attach gas blocks that you might as well not even drill it.

If it's your SHTF rifle then its insurance. Honestly you should be behind a bolt action .308 or better if SHTF.

@@johnonthecooldoe6338 a bolt action .308 in a SHTF situation? This is the most Fudd thing I've read lately.

An end mill will work. But why mot just drill and tap for to more set screws. My delton has four. from the factory

Check the website for pricing.

+Coy Collins Rainier has the jigs in stock. I will have more inventory in early 2016

That’s what she said.

Why is that?

@@zxtuner4lyfe because it's very easy to go to far.

@@Adam-su2jj thanks man. Im doing mine now. Doing it by hand but it takes forever

@@zxtuner4lyfe no problem

9

thought the same thing. if he goes to an outdoor range the pin may just float away in the breeze

+gilliland426 No. I cannot "hook you up."

+nsz85 😂

Lol. Nice ar, could you hook me up with one to try.

The drilling makes a notch on the barrel.

I don't know what an end mill is.

Not needed for a job this small & easy.

BigYeet If it’s a precision rig, it will probably never see volumes of fire high enough to the point where you’d see a difference

BigYeet, in your case consider just staking the set screws in place with a spring loaded punch. Probably the best of both worlds for you. Makes your block more secure without the variable of a pin.

+SHWELL11 ;-)

It’s the constant vibrations from the cycling and the heat of the gas block from firing that cause the set screws to loosen.

+Springfieldm14 308winchester and CLP is better than nothing at all. 😉

@Kimber 10MM You capitalize after a period and space. Should read "If", and I used CLP for many uses in combat such as reaming.

betatalk357 psshhhh iirc military m4s supplied by fn if I'm not mistaken... only need to be 3 moa capable at a 100 yards to pass quality. Not to mention chrome lining also affects accuracy. U won't find any high precision rifle with a non free float guard, chrome lined barrel and a pinned gas block if it's DI and not bolt action. Just because military m4s have doesn't mean it's just as accurate and unpinned. They're also chrome lined that's a big no no if you're aiming for sub moa accuracy which the military DOESNT on a m4

+nemisans13 This is a picture of a Bravo Company SPR Mk12Mod1 - Notice the gas block. i.imgur.com/1TVDaTS.jpg

+nemisans13 the mk12 is not pinned.

+John K depends which one you get. The MK12 was done quickly to fill a gap in the Arsenal. There is quite a bit of variation between different MK12s. You see the same thing right now in some of the M24s. You may have one that's all stock in 7.62x51 and another that The only original part is the receiver, in 300 WinMag. The last one I was issued was in .300 wm. It had a Mcmillan stock, had a new aftermarket barrel, and an after market scope replacing the Leopold.

+nemisans13 Doesn't harmonics have to do with repeatability? A pinned gas block wouldn't affect that. If you had a target crowned barrel then I guess I wouldn't pin a gas block. I really doubt it affects accuracy.

How did yours turn out? I want to do this too, but I'm nervous.

Maybe you could put a roll pin through the taper pin. And and then put a taper pin into that roll pin. Just in case.

+jamesp81 He makes a jig for .625

Just an extra step. It makes a low profile gas block as solid as possible.

Thanks. I contacted the company and they essentially said the same thing, that it isn't necessary. I have a pretty good view of the gas block through the hand guard. I can keep an eye if it starts to migrate.

Nitride is NOT a coating. It is a form of heat treating which hardens the surface a few thousandths.

@@richstone2627 regardless the barrel is too hard for standard high speed drills and reamers

I can vouch for not trying to drill nitrided barrels . Regular drill bits won't even cut it.

Rockwell hardness is up to around 70-75. You need to use a carbide bit.

+Rendall Hostetler Its a fail-safe. There is nothing negative nor is there a downside to doing both.

+nsz85 thanks

Even then it doesn't need pinned.

@@cody8217That’s weird because USASOC says it does…

@@rifleshooterchannel208 USSOCOM has no say in it. Crane does.

Good thing he has the dimples because that pin he installed isn’t doing anything.

John S he drilled to much, save yourself the headache and just buy uppers or guns with already pinned gas blocks, I have the geissele urgi upper and love it

A taper pin provides what's called an "interference" fit. It's just like a clutch on a snowmobile(with a tapered crankshaft). I've seen them lose a clutch retaining bolt and stay on for miles. Even had them come in for service with a missing bolt and the guy never knew it...