5.56x45mm NATO Gun Parts

Andro Corp Industries ACI-15 Essential 16 Semi Automatic Rifle 5.56x45mm NATO 16" Black Threaded Barrel QPQ Black Frame Black Pistol Grip

Ar-15 Combat Grade Barrels - 5.56mm Nato 16'''' Combat Grade Barrel

Maxim Defense MDX 510 AR-15 Complete Upper Receiver 5.56x45mm 10.3" Barrel Black

Maxim Defense MDX 510 AR-15 Complete Upper Receiver 5.56x45mm 10.3" Barrel Arid

Maxim Defense Industries PDX Kit Flat Dark Earth 5.56 5.5 Barrel 20-Rounds Threaded

Anderson Manufacturing AM-15 Complete AR-15 A2 Lower Receiver

Anderson Manufacturing AM-15 Complete AR-15 Magpul MOE Lower Receiver - FDE

Dark Storm Industries DS-15 AR-15 5.56x45mm NATO Upper and Lower Receiver Parts Builder Box for Standard or Fixed Magazine Typhoon Rifle Anodized

Hexmag Hexid Color Id System Yellow 2 Pack

DPMS AR15 223/5.56 LOWER RECEIVER PARTS KIT

E-Lander 30 Round AR-15 Steel

E-Lander 40 Round AR-15 Steel

SPIKES TACTICAL Sandbox Spider Upper/Lower Set

ATI MilSport 223/5.56 Upper/Lower Receiver Combo with ODG Finish

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