GC_UPC A.T.I. Milsport AR-15 Rifle, 5.56 NATO, Forged Aluminum Mil-Spec Upper and Lower, 15" M-Lok, Rail, 16" BBL, SOM Muzzle Brake, 30 Rd Mag - G15MS556CSS $456.47 G15MS556CSS show more like this Calculated in Cart Classic Firearms GC_UPC ATI RIA AR15 MILSPORT 5.56X45 16" 1:8 BBL 15"MLOK 6POS M4 STK 30RD MAG $466.61 ATIG15MS300ML15 show more like this 19.99 The Armory at LTT GC_UPC Milsport AR-15 $479.99 - show more like this Free Shipping Hammer Outdoor Sports