A2 Arms gas regulating bolt on sale

Bikebreath · Sep 21, 2017

No need for a tunable gas block and you can adjust the gas through the ejection port without disassembly.

I went a little in the hole getting this before my finances allow, but isn't that the American way? I couldn't pass up a $90 savings.

https://www.2a-arms.com/products/titanium-regulated-bolt-carrier

mdflyer · Sep 21, 2017

Looks really nice, and light.

John from MD · Sep 21, 2017

Looks like a solution looking for someone with deep pockets. :innocent0

outrider58 · Sep 21, 2017

John from MD said:
Looks like a solution looking for someone with deep pockets.

^^^This.

I can tune my rifle through my gas block without disassembly.

So does that thing bleed off gas through the chamber? I'd prefer to halt excess gas at the block.

John from MD · Sep 21, 2017

It appears to have replaceable orifices held in place by a set screw where the standard exhaust ports are. I have never had any issues with a Seekins gas block and they are a whole hell of a lot cheaper. :thumbsup:

Bikebreath · Sep 21, 2017

John from MD said:
Looks like a solution looking for someone with deep pockets.

Where's the love, here :lol2:

No deep pockets for me. I'm not versed in building an upper, so a gas block is above my pay grade. No biggie, I'll just drop this bolt in. Win/win for me

danb · Sep 21, 2017

Bikebreath said:
Where's the love, here

No deep pockets for me. I'm not versed in building an upper, so a gas block is above my pay grade. No biggie, I'll just drop this bolt in. Win/win for me

There is no magic to a gas block, or changing a gas block. A few screws. A low profile adjustable will run you < $75 and you can have it changed in under 30 minutes.

The reason I see getting this is that it may be hard to fit an adjustable gas block under your handguard. If you need more clearance, this would be cheaper than a new gas block and handguard.

Honestly, I foresee reliability issues with this BCG. I'd like to know what happens when this gets dirty. Is this going to cycle reliably when dirty and/or hot? who knows.

rbird7282 · Sep 21, 2017

Damn, I can get a low profile adjustable gas black and 2 new good quality BCG's for that kind of money

Sent from my iPhone using Tapatalk

danb · Sep 21, 2017

rbird7282 said:
Damn, I can get a low profile adjustable gas black and 2 new good quality BCG's for that kind of money

Sent from my iPhone using Tapatalk

Yeah, but you will not have the experience of shelling out a lot of cash to be a guinea pig for untested technology.

rbird7282 · Sep 21, 2017

danb said:
Yeah, but you will not have the experience of shelling out a lot of cash to be a guinea pig for untested technology.

Lol

Sent from my iPhone using Tapatalk

Magnumite · Sep 21, 2017

I have an inquiry only. Could the set screw loosen and fall into the reciever or rub against the reciever bore?

John from MD · Sep 21, 2017

I don't see any safety for the screw so I guess that is possible. I haven't read any of their material so they may have another way to prevent it from coming out.

mdflyer · Sep 22, 2017

this BCG is also made of Titanium and half the weight of my lightweight NIB BCG hence where a lot of the money is.. I would bet there is almost no felt recoil if tuned right, i just have other toys I want at the moment or I would order one

rayrevolver · Sep 22, 2017

Gemtech has an adjustable BCG and Bootleg as well. If you want a suppressed/non-suppressed build, they make a lot of sense. Or if you want to tune a game gun, hence the use of Ti.

I went with an adjustable block but would consider a Gemtech/Bootleg for a upper with an FSB. The lightweight carrier is more geared towards games and I am sure it will make for a soft/quick shooting rig when tuned.

alucard0822 · Sep 22, 2017

This isn't competing aggainst a standard bolt carrier, it's competing aggainst a low-mass bolt and adjustable gas block. For folks that don't see the point, they probably don't compete or use their rifle in a way that one would make much of a difference. Comparing to a good adjustable gas block with a sub 6oz Ti or AL carrier, $350 is a steal as most would be $500+, provided it works, and doesn't have any issues with fit or galling. It basically makes it possible to use an off-shelf upper, and drop in a low-mass tuneable gas system in about 10 seconds, could potentially switch back to a full mass/gas system for defensive use where reliability trumps low recoil. There has been a debate for awhile between choke-off and bleed-off gas control. Bleed-off tends to be easier and more precise to adjust while being less apt to clog or be overly ammo sensitive, problem was the gas venting out of the block under the handguard, this solves that problem venting out of the ejection port, and should be easier to adjust than using long allen wrenches for blocks under handguards.

clandestine · Sep 22, 2017

The design has no click settings which means there is only guesswork when changing settings.

The design also regulates gas after it enters the gas system which is inferior to regulating at the Gas Block/Manifold/FSB

I have also noticed that designs that allow more pressure to reach the gas key, and then try to restrict at the carrier put more load on the Bolt Lugs, and behave like Gas Piston AR's. They often break Bolts sooner and they exhibit more extraction issues.

On a properly gassed AR the design actually unloads the lugs from the barrel extension when unlocking.

But what do I know. I only have about 10k AR's that have crossed my bench.

atblis · Sep 22, 2017

I had the experience with the adjustable gas keys that even when turned off the gun would still cycle which led me to ponder a few things. The conclusion I came to was that which is stated above. The effect of the gas piston formed by the bcg inside of carrier is to aid in unlocking by unloading the bolt from the barrel extension. So with the gas key turned off, I still had enough gas to cycle, but without the benefit of the AR bolt/carrier/gas-key design.

Adjustable gas blocks are where it's at. The adjustable gas key now sits in a box with all my other unused no longer cool AR15 parts.

clandestine · Sep 22, 2017

atblis said:
I had the experience with the adjustable gas keys that even when turned off the gun would still cycle which lead me to ponder a few things. The conclusion I came to was that which is stated above. The effect of the gas piston formed by the bcg inside of carrier is to aid in unlocking by unloading the bolt from the barrel extension. So with the gas key turned off, I still had enough gas to cycle, but without the benefit of the AR design bolt/carrier/gas-key design.

Adjustable gas blocks are where it's at. The adjustable gas key now sits in a box with all my other unused no longer cool AR15 parts.

Thanks for sharing your experience. Your post is exactly what I was referring to.

GottaEat · Sep 22, 2017

I'll be getting an adjustable BCG in the future for a build that has a fsb and dedicated suppressor. Right now it's got more "kick" than it should and I think it's a better alternative than heavier buffers. I think I'll be going with the Gentech version. Don't need a light weight BCG.

outrider58 · Sep 22, 2017

alucard0822 said:
This isn't competing aggainst a standard bolt carrier, it's competing aggainst a low-mass bolt and adjustable gas block. For folks that don't see the point, they probably don't compete or use their rifle in a way that one would make much of a difference. Comparing to a good adjustable gas block with a sub 6oz Ti or AL carrier, $350 is a steal as most would be $500+, provided it works, and doesn't have any issues with fit or galling. It basically makes it possible to use an off-shelf upper, and drop in a low-mass tuneable gas system in about 10 seconds, could potentially switch back to a full mass/gas system for defensive use where reliability trumps low recoil. There has been a debate for awhile between choke-off and bleed-off gas control. Bleed-off tends to be easier and more precise to adjust while being less apt to clog or be overly ammo sensitive, problem was the gas venting out of the block under the handguard, this solves that problem venting out of the ejection port, and should be easier to adjust than using long allen wrenches for blocks under handguards.

Not sure about the debate. I guess wherever there's a choice, there's bound to be debate. As far as that goes, as I inferred in my previous post, excess gas blowing out the gas port only adds to gas face. Like a lot of others here, I have learned the beauty and ease of click-setting gas blocks and their inherent repetability. People make too much about re-setting adjustable GBs. I have them on all my ARs. The only ones I reset are my suppressed gun, and those generally only require two settings. Suppressed and unsuppressed. That is six clicks and ten clicks, respectively for my guns.

A2 Arms gas regulating bolt on sale

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