5.56x45mm NATO Rifle Parts

Moriarti AR-15 5.56/.223 Stainless Steel Diamond Fluted Tactical Upper Assembly Black 20in

Moriarti AR-15 5.56/.223 13.9in Carbine Upper Assembly w/ Pencil Profile Black 28.15in

AT3 Tactical AR-15 Slick Side Billet Upper Receiver Black

XTS Complete Upper Receiver w/o BCG w/12in Ce Rail USA Edition AR15 24.75in 12in Barrel Carbine 1-8 Twist 1/2x28 Thread M-LOK Stainless Steel Bird

XTS Complete Upper Receiver w/o BCG w/ 12in Ce Rail AR-15 .223/5.56 24.75in 16in Barrel Carbine 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG w/ Ce Rail AR-15 .223/5.56 19.5in 10.5in Barrel Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride

Guntec USA AR-15 5.56x45mm NATO Slabside Stripped Billet Upper Receiver Anodized Purple

Guntec USA AR-15 5.56x45mm NATO Slabside Stripped Billet Upper Receiver Anodized Green

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades & Skeletonized Aluminum Pistol Grip Anodized Green

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades & Skeletonized Aluminum Pistol Grip Anodized Bronze

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades Anodized Bronze

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades & Skeletonized Aluminum Pistol Grip Anodized Blue

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades & Skeletonized Aluminum Pistol Grip Anodized Red

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades & Skeletonized Aluminum Pistol Grip Anodized Gold

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 16 in RA-MK1-16-PU-BLK

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in

Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 10.5 in

Andro Corp Industries AR-15 Lower Parts Kit Black

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades Anodized Gold

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades Anodized Red

Guntec USA AR-15 Ultimate Rifle Kit Anodized Grey

Guntec USA AR-15 Essentials Kit Anodized Purple

Maxim Defense Industries MDX 508 U.R.G. AR-15 5.56x45mm NATO 8.5 inch Upper Receiver Pistol Length 1-7 Twist 1/2x28 HATEBRAKE Black