This magazine is duty ready, made with a military qualified material and designed to perform in harsh environments and conditions. It utilizes the same un-matched Mod-2 internal system for unparralled function and reliability. Features: 20-round magazine. Sturdy, impact resistant polymer with textured grip. Anti-tilt follower. Heavy duty, non-memory, and non-corrosive stainless steel spring. Made in the U.S.A.