5.56x45mm NATO Upper Receivers

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

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

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

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

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 Grey

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

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

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

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

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

Guntec USA AR-15 Upper Receiver Assembly Kit Gen 3 Trap Door Assembly Cerakote Flat Dark Earth

Guntec USA AR-15 Upper Receiver Assembly Kit Matte Rainbow Pvd Coated

Guntec USA AR-15 Upper Receiver Assembly Kit Gloss Rainbow Pvd Coated

Guntec USA AR-15 Upper Receiver Assembly Kit Black Chrome

Guntec USA AR-15 Upper Receiver Assembly Kit Chrome

Guntec USA AR-15 Upper Receiver Assembly Kit Gold Plated

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Black

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Green

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Purple

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Grey

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Clear

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Blue

Guntec USA AR-15 Upper Receiver Assembly Kit Anodized Gold