Rifle System with Carbine Stock?

[Shihan]

Any problems with doing this?
Thanks

[Sry0fcr]

None that I'm aware of. Seen it done a few times.

[sgtlmj]

The Canucks do it. It's called the C7A2.

[Shihan]

Any idea on buffer type?

[Robb Jensen]

I'm pretty certain they use a CAR (2.9oz) buffer. Anything heavier would likely cause the rifle short cycle when it got dirty or dry or with weak ammo (weaker than 5.56mm NATO). I'm sure KevinB knows for sure.

[Bob Reed]

Hello: I was told to use an H3 Buffer when using a Sliding Stock on 20" rifles.

I haven't installed the sliding stock on my A2 yet, but, I totally trust the person that advised using the H3 Buffer when I do.

Take Care.

[Robb Jensen]

Hello: I was told to use an H3 Buffer when using a Sliding Stock on 20" rifles.

I haven't installed the sliding stock on my A2 yet, but, I totally trust the person that advised using the H3 Buffer when I do.

Take Care.

Who told you this Bob?

H3 was essentially designed for rifles with HUGE gas ports or suppressed guns. At 5.6oz's is way too heavy for an AR with a rifle length gas system.

CAR is 2.9oz
H is 3.8oz
H2 is 4.57oz
H3 is 5.6oz (same weight as a 9mm buffer)
X is 8oz

[markm]

I guess the question would be what is the weight of the A2 buffer?

[Robb Jensen]

I guess the question would be what is the weight of the A2 buffer?

5.2oz for a rifle buffer. BUT the springs are different. TOTALLY different equation. The reciprocating weight is different as well.

[markm]

The buffer spring? Is it that much different?

Of all the guys that I've read about with this set up, I can't recall any cycling/buffer issues. I always thought that the Rifle length system was much more forgiving compared to the carbine.