A lightweight and durable magazine for AR-15 / M4 platforms chambered in 5.56 NATO / .223 Rem. Made of a durable polymer material with a textured grip. Additional components include a heavy-duty stainless steel spring and anti-tilt super follower. Features:Impact-resistant polymer with textured grip;Anti-tilt super follower;Heavy-duty, non-memory, and non-corrosive stainless steel spring;Made in the USA