Matt.Cross

So with the buffer material shipping today, I've turned to researching adjustable gas blocks and found this offering from Rainier Arms; https://www.rainierarms.com/superlative-arms-adjustable-gas-block-bleed-off-clamp-on Does anyone have one? (I know, I know, the rule... Shut up.)

I will confess, I'm way too gassy... .... in my AR I mean.... When I originally built my AR, I was simply trying to get it together and with my suppressor months away from arriving, I put a straightforward (non-adjustable) Fulton Armory clamp-on gas block on my build. When the suppressor finally arrived, it was incorporated into the build without any additional modifications made to the gas system. The rifle actually continued to function properly though far more dirty than usual in the vicinity of the BCG and chamber, and I ran it that way for a substantial amount of time. Fast forward to the recent desert shootfest, and my trusty rifle exhibited ghastly feeding behavior, converting me involuntarily from a gas operated weapon to a veritable modified bolt gun. Think mortaring and lots of tap-rack-bang... So I talk it over with Tom and we came up with a strategy to keep me operational and iron out the functional shortcomings at the same time: a heavy buffer added first to mitigate the feeding problems, and an adjustable gas block later to mitigate the overgassing/fouling @ the chamber. This thread is to document the implementation of the first strategy, the creation of my own heavy buffer. Being a Machinist by trade, I have access to all the cool toys needed to manufacture my own heavy buffer, and it theoretically should be easy to duplicate the buffer. Time will tell. I've ordered a 1 ft length of 1" diameter 416 stainless from McMaster-Carr (~$22) and it will ship Monday. I will document the creation of the new & improved buffer and post here for your enjoyment. It's gonna be awesome!!!

Welcome from North Carolina, glad to have you. We'll be overjoyed to help you with anything that the search bar didn't help you with, or just ask anyways and one of the resident curmudgeons will grouchily dig up some archaic info for you.

Thanks brother! I got to shoot out to ~660 with Tom and Dirk, and the Vortex made it child's play. We didn't get around to shooting any farther than that at the time but I was shooting that distance at 6-8 power magnification. I felt like stretching it out to 1k wouldn't have been at all difficult with so much more magnification available.

I love the EBR-1, the MOA is becoming a bit dated for ranging but the math is easier for me personally, so that's what I use. The sun shade actually comes with the scope, but it's easy enough to acquire and add spares too if you need them. Sunshade doesn't affect FOV at all. I'll be finding some Butler Creek flip up covers next for it. Concerning the can, there's no discernable POI change between mounted and unmounted, at least concerning windage. You lose some velocity without the can, so at distance your elevation is subject to shift, but I haven't shot at significant distance enough to make a comparison.

I have sent Tom the details of a homebrew case annealer, he'll probably be building one and posting it here one of these days...

Rifle is built on a (now discontinued) Mega MA-TEN MTS-4400 monolithic rifle length receiver. Ops Inc 12th Model .30 cal suppressor and accompanying brake @ the muzzle, Fulton Armory mid-weight 18.5" stainless barrel and matched bolt, Magpul furniture, Chrome Silicone flat wound operating spring, DPMS LR308 buffer, PACT (ATC) SR Gold trigger, and SI Defense 416 SS serrated BCG w/ Nickel Boron plating. SWFA one piece 30mm scope mount topped off with a Vortex Viper PST 6-24x50 FFP optic w/ EBR-1 reticle. It's a very sweet rifle, surprising performer at distance. Tom and Mike and Dirk have watched consistent hits with a very hot barrel at intermediate long distances (~650 yds). The most awesome aspect for me is how quiet it is suppressed, even with supersonic ammo. Edit: I forgot about my awesome BAD-ASS safety selector from Roger. I put it on in AZ, and it really lives up to its name.

Viper PST 6-24x50 FFP w/ EBR-1 (MOA) reticle.

"Daddy, can we go play in the snow in my new clothes?" Yep, baby is finally wearing optics worthy of her purpose, so we ventured out into the snow to show her off. Before: After: I love my new setup, thanks again Tom!!!!

Ooooooohhhhhhhh shiney!!!!!

PM me the modified version of what you want it to be and I'll copy/paste over your OP. Edit permissions are restricted because historically some dickheads would erase/edit their posts and claim to be victims of the Mods and Admins. Didn do nuffin' types.

Roger that. Just wanted to share with you that the folks here aren't your run of the mill variety shade tree gun plumbers, but very smart articulate fellas with a vast and varied experience with both the platform and the material sciences associated therewith. You would have to have an otherworldly amount of force exerted on both your handguard AND barrel in order to see interference from more than 1/8" of barrel whip, at which point you'd probably have bigger concerns than POI shift.

How are you going to induce enough flex into the handguard to achieve any kind of interference? Bear in mind that a good many of us are career mechanics and machinists, as well as folks familiar with Proof Research and it's outstanding products. If you are concerned because you've seen footage of AR barrel whip during the recoil impulse, it's a moot point once the bullet has departed the muzzle. Forgive my asking, but what was your MOS when said testing was being done?

Rifle length is .093" not sure on mid or carbine length systems.

I understand, I was just trying to illustrate my point. Trying for .5 MOA @ 750yds with a light build is probably not a possibility for most folks that don't have the requisite time, skills, and equipment to achieve that kind of accuracy. In any case, a 10" group @ 750 yards is 1.285 MOA, so an MOA capable rifle would get you there capability wise.

Dammit Mike!

Smartass? I'm moving up in the world!!

Ball busting is routine around here, you'll get accustomed to it. You'll only encounter more ball busting as we get to know you better, so you have that to look forward to... You'll probably find that the trade off of weight is usually accuracy. Whereas rigidity usually equates to weight, going light usually means sacrificing rigidity at least, if not velocity in addition. IOW, trading barrel length to regain rigidity might cost you accuracy at distance because of velocity loss. Believe us, you aren't the first nor last builder to want a really light weight 1000yd laser, we all want one too. The reality for those of us who have achieved both light builds and laser accurate builds, is that the two never coincided. Don't take the ball busting to heart, it's just a few good men who have trod your path before.

Most things that seem too good to be true, aren't true.

We'll be praying for him, thanks for the heads up!

Which buffer tube, spring, and buffer you need will depend on which collapsible stock system you want. Whatcha got your eyeball on stock wise?

That's the spirit!!!

Good shooting!!!

I'm in the Criterion crowd. They're money, even when hot & shooting significant distance, as Tom and Dirk and Mike can all attest.

Mike is a titty man, big time!