Rock River Arms A2 upper, bolt carrier, charging handle, Yankee Hill Machine free float quad rail, and A.R.M.S A2 flip up gas block sight with bayo lug. The barrel is 5.56 1/7 twist rate and can handle heavier rounds...
Tested 8 rounds through it and has been in the safe since....
560.00
Tested 8 rounds through it and has been in the safe since....
560.00