Mk 4 in 6mm ARC

Feature-rich little rifle.  Don't think I'm going to get into 6mm ARC. 

I will be listing a Wilson barrel, JP bolt, Faxon bolt, and Geissele mags (20rnd, 30rnd) soon also.  

If you want a small AR but need a bit more punch, this might be your gun.  Mil spec trigger but it's one of the best (crisp, no slop, clean break, still somewhat heavy) rack triggers I've felt.

80 rounds through it.  It seems to like Hornady BLACK 105gr HP the most, which is a good thing because that load is cheaper than most of the others.  Zero issues/stoppages with 105 Black, Hornady Match 108, Federal Gold medal 108.  Ran it with and without a suppressor.

-adjustable gas block
-mLok free float handguard
-16" 416 stainless barrel.  Black nitride finish. 1:7.5 twist.  5/8x24 threads
-B5 Systems Bravo stock & B5 type 22 grip
-Ambi safety selector
-Ambi magazine release
-6.4lbs