Buffer Question for an AR15 SBR

[EdLaver]

I am in the process of getting my stamp, what buffer would you suggest for a 7" AR15 SBR upper?

Thanks,
Ed

 

[Zak Smith]

I don't remember what happened with the other ones, but we have an H3 in our 7" Sabre M16 (suppressed).

 

[EdLaver]

Thanks Zak I appreciate it, this will be my 1st SBR build.

 

[Zak Smith]

We had to do more tuning because of full-auto. It should be easier to make run reliably semi.

 

[wildman6809]

i have a 7.5" rock river upper on mine and i just used a regular carbine buffer on it and it runs 100%.

 

[TheCol.U.S.M.C.]

I have a 11" SBR runs fine with the carbine buffer. Not sure with a 7" my gut tells me you should just try the stock parts first see if it runs ok before buying a bunch of unneed mall ninja crap.

 

[cottonmouth]

I have a 7" RRA and it runs great with a carbine buffer semi, put it on an M-16A1 and it couldn't keep up, I guess it needs a 9mm buffer for full auto.

J.B.

 

[bkjeffrey]

Try a stock buffer first. Chances are it will surprise you and run just fine. I ran a stock CAR buffer in my 7" SEMI for a long time and it ran fine 90% of the time. There were a few times that the bolt popped off the rim of the cartridge so I went to a heavy buffer and all has been well. I guess I just needed to slow down the cycling a wee bit.