5.56x45mm NATO Rifle Parts

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 16'''' Med Bbl Complete Upper W/13.5'''' Handguard

Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5'''' Med Bbl Complete Upper W/13.5'''' Handguard

Gau-5a 12.7'''' 1-12 Upper Receivers - Brn-Gau-5a Upper Receiver, 12.7'''' 1-12 Twist, Pin/Weld, Black

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 11.5'''', 1-7 Twist, Black

Xm177e2 Complete Upper Receivers - Brn Xm177e2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black

Brn16a1(R) 20'''' Complete Upper Receivers - Brn M16a1 Upper Receiver 20'''' Rifle Length, 1-7 Twist, Black

Brn-15 Upper Receivers 5.56mm Nato - Brn-15 5.56mm 13.7'''' Bbl .750'''' Gas Block Upper Receiver

223/5.56/300 Blk Sa M5 Bdm Triggerguard - 223/5.56 Sa M5 Bdm Triggerguard W/10rd Detachable Mdt Mag

Ar-15 Complete M4 Lower Receiver - Complete Ar-15 Lower Receiver W/O Buttstock

American Defense Manufacturing 5.56 10.5 Inch Barrel M-Lok Rail Upper Reciever Black 10.5 in

Mitchell Defense DOC 14.5in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Jungle Green Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 14.5in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 11.5in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Jungle Green Finish M-LOK Free-Float Handguard

HIPP Customs Complete Upper Receiver 25.5in 16in Barrel 1-7 Twist Hipp Lite Weight Handguard Black/Orange 16.0in

HIPP Customs Complete Upper Receiver 25.5in 16in Barrel 1-7 Twist Hipp Lite Weight Handguard Black/Red 16.0in

HIPP Customs Lower Receiver Parts w/o Trigger Group Black

Grey Ghost Precision Complete Upper 5.56mm 20.12in 10.5in Low Profile Carbine 1-7 1x2/28 M-LOK Black

POF USA P415 Edge Upper Receiver Assembly 5.56x45mm NATO 34 in Length 16.5 in Barrel 5 Position Adjustable M-Lok Edge Triple Port Muzzle Break

Rock River Arms Completed Upper Receiver Left Handed RAGE 2G .223/5.56mm 10.5 Inch Barrel Pistol Profile 1/2-28 Thread Free-Float Handguard A2 Flash

Rock River Arms Completed Upper Receiver Entry Tactical A4 .223/5.56mm 16 Inch Barrel 1-9 Twist 1/2-28 Thread R4 Handguard A2 Flash Hider Black

Rock River Arms 16in Mid LTWT CL Barrel Assembly Black

Rock River Arms Completed Upper Receiver Left Handed RAGE 2G .223/5.56mm 16 Inch Barrel 1/2-28 Thread A2 Flash Hider Black

Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 16 Inch Barrel 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

Rock River Arms Completed Upper Receiver National Match A4 .223/5.56mm 16 Inch Barrel Competition Profile 1-8 Twist 1/2-28 Thread Free-Float Handguard