Rifle length gas suppressed - any issues?

[Eurodriver]

Looking at picking up a BCM 18" w/ 15" KMR whenever it becomes available. I'd like to suppress this either with my M42000 or 762SD. It will be using a standard A2 receiver extension and stock.

I have tons of experience with suppressed SBRs and carbines, but I have never used a can on a rifle. How is the gas blowback and recoil impulse? With the A5 in my SBR it handles it pretty well. Do they make heavier rifle buffers? Do I need one?

[markm]

I ran my can on a 20" HBAR before. You should be fine with the standard Rifle buffer. Mine ran fine.

[Hump66]

No issues out of my SPR with A5 and SPR-M4 can. Smooth shooting SOB.

[thecolter]

I'm running my M4-2000 on an 18", rifle-length gas barrel and it runs great with a standard rifle buffer / spring combo. Very smooth shooting rifle.

Gas blowback is similarly minimal to that of my 10.3" SBR with the Syrac GB running the same can.

[TehLlama]

Unrealistic expectations of smoothness? That's all I can complain about on my 18" Mk12 barreled setup.

[mbpike22]

Mine runs like a champ, no issues with standard rifle buffer and an M42K

[Eurodriver]

Sounds like it will run without issue. BCM needs to get on the ball with these 15" KMRs!

[Turnkey11]

No issues, I shoot Prairie dogs and coyotes with my 20" SDM rifle and a KAC NT4.