The PMAG 30 AR/M4 GEN M2 MOE Window is a 30-round 5.56x45 NATO (.223 Remington) AR15/M4 compatible magazine that offers a cost competitive upgrade from the aluminum USGI. It features an impact resistant polymer construction, easy to disassemble design with a flared floorplate for positive magazine extraction, resilient stainless steel spring for corrosion resistance, and an anti-tilt, self-lubricating follower for increased reliability. Impact and crush resistant polymer construction Constant-curve internal geometry for smooth feeding Anti-tilt, self-lubricating follower for increased reliability Long life USGI-spec stainless steel spring, black-oxide coated (MIL-DTL-13924D) Transparent MagLevel windows on both sides of the body along with a painted indicator on the spring allows for easy determination of rounds remaining from 1 to 30 Textured gripping surface and flared floorplate for positive magazine handling and easy disassembly