556NATO
556NATO
FIGHT DFX UPR 556 PIC 12.5" BLK
FightLite, DFX, Drop-On Upper Receiver Group, 223 Remington/5.56 NATO, 12.5" Barrel, Fits AR15 Lower..
GE SUPER DUTY MOD1 5.56 11.5 URG BLK
Geissele Automatics, Super Duty MOD1, Complete Upper Receiver, 5.56 NATO, 11.5" Cold Hammer Forged B..
GE SUPER DUTY MOD1 5.56 11.5 URG DDC
Geissele Automatics, Super Duty MOD1, Complete Upper Receiver, 5.56 NATO, 11.5" Cold Hammer Forged B..
GE SUPER DUTY MOD1 5.56 12.5 URG BLK
Geissele Automatics, Super Duty MOD1, Complete Upper Receiver, 5.56 NATO, 12.5" Cold Hammer Forged B..
GE SUPER DUTY MOD1 5.56 12.5 URG DDC
Geissele Automatics, Super Duty MOD1, Complete Upper Receiver, 5.56 NATO, 12.5" Cold Hammer Forged B..
GE URG-I NC 556NATO 10.3" BLK/DDC
Geissele Automatics, URG-I, Near Clone, Complete Upper Receiver, 5.56 NATO, 10.3" Barrel, 1:7 Twist,..
GE URG-I NC 556NATO 11.5" BLK/DDC
Geissele Automatics, URG-I, Near Clone, Complete Upper Receiver, 5.56 NATO, 11.5" Barrel, 1:7 Twist,..
HK UPPER MR556A4 5.56 11" BLK
Heckler & Koch, MR556 A4 Upper Receiver, 223 Remington/5.56 NATO, 11" Barrel, Threaded 1/2X28, M-LOK..
LBE READY BUILD KIT 12.5" CHF BBL
LBE Unlimited, Ready Build Kit, Complete Upper Receiver, 12.5" Cold Hammer Forged Barrel, 223 Reming..
LBE READY BUILD KIT 13.7" CHF BBL
LBE Unlimited, Ready Build Kit, Complete Upper Receiver, 13.7" Cold Hammer Forged Barrel, 223 Reming..
LBE READY BUILD KIT 7.5" CHF BBL
LBE Unlimited, Ready Build Kit, Complete Upper Receiver, 7.5" Cold Hammer Forged Barrel, 223 Remingt..
LUTH CMPLT UPR 5.56 11.5" FSB BLK
Luth-AR, Government Profile Complete Upper Receiver, 5.56 NATO, 11.5" Threaded Barrel, F Marked Fron..
LUTH CMPLT UPR 5.56 14.5" CL BLK
Luth-AR, M4 SOCOM Complete Upper, 5.56 NATO, 14.5" Threaded Chrome Lined Barrel, 1:7 Twist, Fits AR-..
LUTH CMPLT UPR 5.56 14.5" FSB BLK
Luth-AR, M4 Government Profile, Complete Upper Receiver, 5.56 NATO, 14.5" Threaded Barrel, 1:7 Twist..
MAXIM PDX UPPER 5.56 5.5" ARID
Maxim Defense Industries, PDX Complete Upper, 5.56 NATO, 5.5" Barrel, Anodized Finish, Arid, AR Rifl..
MCX-SPEAR LT 11.5 UPPER 556 NATO BLK
Sig Sauer, MCX-Spear LT, Complete Upper Receiver, .223 Remington/5.56 NATO, 11.5" Threaded Barrel, 1..
MIDWEST UPPER 10.5" 223/556 M-LOK 9"
Midwest Industries, Upper, 223 Remington/5.56 NATO, 10.5" Barrel, Black, MLOK Handguard, Fits AR-15..
NOVESKE N4 CH OG UPR RCVR 556 12.5"
Noveske, N4 OG, Complete Upper Receiver, 5.56 NATO, 12" Stainless Steel Barrel, 1/2X28 Thread Pitch,..
NOVESKE N4 SHORTY UPPER 556 10.5" BK
Noveske, N4 Shorty, Complete Upper Receiver, 5.56 NATO, 10.5" Stainless Steel Barrel, 1/2X28 Thread ..
SOLGW L89 BS V2 5.56 14.5" HUX BLK
Sons of Liberty Gun Works, Broadsword 89 V2, Upper Receiver, 5.56 NATO, 14.5", HUXWRX Flash Hider, L..