556NATO
556NATO
BLACK RAIN UPPER RECEIVER 223REM BLK
Black Rain Ordnance, Milled Upper Receiver, 223 Remington/5.56 NATO, Flat Top Sights, Black Finish..
CMC AR15 STRIPPED UPPER BLACK
CMC Triggers, Stripped Upper Receiver, 5.56 NATO, Fits AR-15, Matte Finish, Black..
SPIKE'S BILLET UPPER GEN2 MILSPEC
Spike's Tactical, Generation 2, Billet, Upper, 223 Remington/5.56 NATO, Black, Mil-Spec Barrel Nut..
COLT M4 UPPER BLK
Colt's Manufacturing, Upper, 223 Remington/5.56 NATO, Black Finish, Dust Cover, Forward Assist, M4 F..
FORTIS BILLET UPPER RECEIVER
Fortis Manufacturing, Inc., Billet M4 Upper, Stripped, Fits AR15, 223 Remington/5.56 NATO, Black Col..
LANTAC USR FORGED UPPER RECEIVER BLK
LanTac USA LLC, USR, Upper Standard Receiver, 5.56 NATO, AR-15, M4 Feed Ramps, Anodized Black..
LUTH AR A2 ASSEMBLED UPPR RECVR N/CH
Luth-AR, A2 Upper Receiver, Upper, 223 Remington/5.56 NATO, Black, AR15, Anodized..
LUTH AR STRIPPED A2 UPPER BLACK
Luth-AR, A2 Upper Receiver, Stripped Upper Receiver, 223 Remington/5.56 NATO, Fits AR-15. Anodized F..
NOVESKE 4TH GEN N4 CH UPPER RCVR
Noveske, 4th Gen N4, Upper Receiver, Multi-Cal, Fits AR Lower Receivers, Carry Handle, Anodized Fini..
WMD NIB-X UPPER RECR 5.56 STRIPPED
WMD Guns, Upper Receiver, 5.56 NATO, A3/A4 with M4 Feed Ramps, NiB-X Coating, Nickel, Stripped..