GC_UPC Daniel Defense DD Urg M4a1 5.56 14.5" Risii Fde 12.0 / 23-004-13150 MAP 23-004-13150 show more like this Firearms $18.45, Free over $500 Shooting Surplus GC_UPC Daniel Defense M4A1 Upper, 223 Rem/556NATO, 16 in (14.5 in with Pinned Brake) Barrel, 1:7 Twist, with M4 12.0 Rail, Flat Dark Earth Finish 23-004-13150 MAP 23-004-13150 show more like this Flat Rate Starting at $11.99 Hinterland Outfitters