Heckler & Koch Mr556 A4 Upper Receiver, 223 Remington/556nato, 11" Barrel, Threaded 1/2x28, M-lok Handguard, Anodized Finish, Black, Fits Ar-15 Lower Receivers, Includes Bolt Carrier Group, Charging Handle, Buffer Weight And Buffer Spring 51000385
Hk Upper Mr556a4 5.56 11" Blk
$2,238.99
