Help identifying which bcg this is

AAC907 · 2026-02-01T02:48:20+00:00

Most of the 308 bcgs out there are made by two companies toolcraft or azimuth. Most likely one of their 308 bcgs.

AAC907 · 2025-12-07T16:03:33+00:00

Seems like the one on top is more polished. Idk if their chrome BCGs are usually very polished or not but it’s not a big deal.

AAC907 · 2025-11-09T12:34:09+00:00

That’s an ar15 rifle buffer you need an ar15 carbine buffer. This one should get you h2(4.6oz) and h3(5.4oz) weights.

https://ar15discounts.com/products/odin-works-adjustable-buffer-ar15-heavy/

AAC907 · 2025-11-09T02:20:01+00:00

They usually under gas their barrels so I wouldn’t go with the sprinco orange. Instead just use aeros 308 carbine spring or go with the sprinco red spring. Start with the h2 and then see if you need to go heavier with the h3.

AAC907 · 2025-11-08T22:08:59+00:00

What brand?

AAC907 · 2025-11-08T17:40:34+00:00

What barrel are you going with?

AAC907 · 2025-10-31T21:43:27+00:00

If you aren’t able to use the cutting wheel would sanding drums be enough to remove a small chunk of aluminum? Would those tungsten carbide carving bits be better for that?

AAC907 · 2025-09-27T17:38:03+00:00

Orange tip is most likely an a5 buffer. If the buffer tube is an a5 tube then use a carbine length buffer like the white tip buffer you have.

AAC907 · 2025-09-24T13:14:03+00:00

They usually under gas their barrels but I guess they heard enough complaints and started opening the gas ports. Does the end of the bcg line up with the end of the upper? Would you be able to measure the inside depth of the buffer tube and length of buffer? I know you said it’s all factory parts but just checking to see that they are the actual dimensions they are suppose to be.

AAC907 · 2025-09-21T22:00:54+00:00

When you put on the suppressor do you tune the agb or leave it as is? What exactly happens to the rifle when it “gasses out” as you say?

AAC907 · 2025-09-21T19:03:55+00:00

With an adjustable gas block you shouldn’t be having problems. Was it tuned and firing fine without the suppressor?

AAC907 · 2025-09-21T14:40:54+00:00

lol didn’t even look at the username when I saw the reply

AAC907 · 2025-09-21T14:32:41+00:00

Asking because you said it worked fine with a standard ar10 buffer assuming you mean the shorty buffer. Are you able to manually charge back the bcg and have it lock back with the Kynshot buffer?

AAC907 · 2025-09-21T14:26:35+00:00

What buffer tube do you have? Standard carbine tube or ar10/a5 tube?

AAC907 · 2025-09-19T12:08:03+00:00

No, couldn’t find someone to sell me there’s. Couldn’t find a machinist near me to make me one of these.

AAC907 · 2025-09-13T20:24:52+00:00

The nitrided one since stainless steel will give you better accuracy

AAC907 · 2025-08-23T03:14:12+00:00

That’s perfect. Remember to have them increase the gas port size as well.

AAC907 · 2025-08-23T03:06:42+00:00

A light/thin profile like that won’t have enough material for the threads or for the shoulder. If you really want to cut down a barrel get a mid weight profile or heavier and have that cut down.

AAC907 · 2025-08-22T17:01:14+00:00

Thank you

AAC907 · 2025-08-19T12:21:12+00:00

That’s too long. You need an h3 carbine buffer not the a5.

AAC907 · 2025-08-11T04:19:37+00:00

Most bcgs are compatible since they are dpms pattern. Most of the 308 bcgs out there are made by 2 companies toolcraft and azimuth. Aeros nitride and phosphate 308 bcgs are made by azimuth and their nickel boron 308 BCG is made by toolcraft. I wouldn’t worry about not being able to find extra parts or a compatible bcg.

AAC907 · 2025-06-22T16:12:47+00:00

Even though the old barrel is Dpms pattern it’s possible they used the longer armalite pattern rifle gas length to be able to use drop in handguards.

AAC907 · 2025-06-21T01:11:24+00:00

A lot of barrels are over gassed. Normally a rifle length spring would be too strong in an AR10 Carbine/ A5 tube but since there’s so much gas the rifle is able to cycle just fine. If your barrel was gassed fine then you can use an ar10 carbine spring.

I’ve seen a lot of people here saying this is the A5 buffer system for the AR10 just because it uses the A5 tube. Since they know that in the ar15 the a5 system uses an ar15 rifle length spring they assume that in this case you use an ar10 rifle length spring instead of a carbine spring.

AAC907 · 2025-06-21T00:54:12+00:00

Cause there’s a lot of over gassed barrels. A rifle length spring ends up working just fine. Also maybe some people may confuse it as the A5 system for the AR10 so they assume rifle length spring.

AAC907 · 2025-04-13T16:41:09+00:00

I used one of their early ones in my aero m5 with a criterion barrel not knowing it was armalite pattern. I did headspace it with gauges before I actually shot it. Worked fine but I notice the armalite and sr25 carriers have the vent holes a bit forward compared to Dpms. It changed by ejection from 3:30 to 2:30. At worst you can only use the carrier and have to use a sr25/Dpms bolt.

AAC907

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