Rainier Arms Mountain MOD2 5.56 NATO AR-15 14.5" Barrel. New


Specifications: 4150 CMV Steel Length: 14.5”


Twist: 1:7


Thread Pitch: 1/2x28


.750 Gas Block Seat


5.56 NATO Chamber


Mid length Gas System (Gas Tube not Included)


M4 Feed Ramps


Half-Fluted Profile


Weight: 1.80 lbs.