What a combo? Get started with your very own left handed build. Our  A3 upper receiver Assembly is second to none in quality and is made to mil-spec standards. It includes a picatinny rail on the top, dust cover, and installed forward assist.

This combo also comes with a bolt carrier assembly is designed to work with any Stag 15 rifle, upper half, or barrel designed for right hand ejection in the either 5.56, .223, or 300 BLK. The salt path nitride process (also known as QPQ) creates a much harder surface that is, easy to clean, will run with less than ideal lubrication and resists wear for a lasting corrosion resistant durable finish.

Specs

Receiver Material: 7075 T6 Aluminum with FDE Cerakote Finish

Hammer/Trigger pin size: Mil-Spec Small Pin .154"

Pivot/Takedown Pin Size: Mil-Spec Small Pin .250"

A3 Upper Specs

Pivot/Takedown Pin Size: Small pin - .250"

Material: Forged and mil-spec with FDE Cerakote and a picatinny rail on top

Bolt Carrier Specs

Coating: Nitride Coating

Bolt carrier material: 8620 steel

Bolt: 5.56/.223/300 BLK Left-Handed Bolt assembly

Included parts: Bolt carrier, bolt assembly, cam pin, firing pin, and firing pin retaining pin

Design: M16 carrier with a shrouded firing pin

Staking: Proper mil-spec staking of the gas key