This is a factory Armalite AR-10 B Gen II 20-round magazine in .308 Winchester / 7.62x51mm NATO.

Engineered for mobility and durability, this factory original is made up of durable aluminum with a follower designed for a smooth and reliable feeding experience. 

Lightweight and durable, the 20-round magazine is great for hunting, competition, and law enforcement applications.

Fitment

These magazines are only compatible with Armalite AR-10 rifles and only fit type “B” lowers. They do NOT fit type “A” lowers or LR/SR style AR-10 rifles.