Guess I'll just ask directly this time..
Background: I'm building a 11.5" SBR that'll serve as my general purpose carbine, home defense rifle, plinker, training weapon, show and tell piece, and whatever else you can think of. It'll be shooting at least 75% of the time suppressed through a AAC M4-2000 can generally fed 5.56 spec ammo but want .223 capability if the need arises.
Pertinent rifle parts:
AAC Blackout
AAC M4-2000 Can
BCM BFH 11.5" Barrel
*LMT Enhanced BC*
*LMT Std. Bolt*
VLTOR A5 System
It's nothing new around here that the BCM BFH, regardless of length are one of the go-to barrels. The VLTOR A5 system seems to get the universal nod as well. After reading about all I could regarding similar setups and gas system issues/ect. you'd be hard pressed to miss Grant's SBR/Suppressed thread. Without disclosure of gas port dimensions of his N4 barrel I am a little curious how my BFH's (11.5") gas port dimensions compare.. But I don't figure that'll be disclosed.. So rather than a quantitative comparison perhaps we can look at this from a qualitative assessment.
I suspect the BCM gas port dimensions are a bit larger than the N4 barrel Grant spec'd in his case. All things being equal this would have the BCM rifle being slightly more gassed than the custom N4. IIRC Grants rifle doesn't lock back when shooting with the can detached. And from my understanding thats with the utilization of the standard carbine receiver extension and buffers (of various weights).
What I'm hoping to do is stir up some discussion on "obtainium" barrels vs. custom spec'd "unobtainium" barrels and building a reliable and dependable SBR that functions both suppressed and unsurpassed. From what I've been able to dig up, I haven't found much of any chatter on this type of setup. If I've somehow overlooked the obvious, please advise and point me/us in the right direction as I'm not likely alone in this quest. Or certainly won't be the last..
So.. In summary: Those of you with experience or direct knowledge of the BCM BFH in SBR configuration (preferably 11.5") Is the LMT Enhanced carrier worth it to make a reliable carbine? Or have you had success with a standard BCG with similar conditions to the intended use/treatments that my rifle is to be exposed?
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