Magpul PMAG 20 LR/SR GEN M3 Window Magazine 308 Winchester 762 NATO 20 Rounds

The Magpul PMAG 20 LR/SR GEN M3 Window is a lightweight, reliable 20-round magazine designed for SR25/M110 pattern rifles chambered in 7.62x51 NATO (.308 Winchester). Constructed from impact- and crush-resistant polymer, this magazine features dual-side transparent windows that allow for a quick count of the approximate number of rounds remaining via the high-visibility indicator coil on the spring and numerical markers on the magazine body. MagLevel system provides fast round-count estimation without affecting durability or reliability. Stainless-steel corrosion-resistant spring and anti-tilt self-lubricating follower. Constant-curve internal geometry for continuous reliable operation. Flared floorplate aids extraction and handling, improves drop protection, and ensures better compatibility with tight double magazine pouches. Designed specifically for SAAMI-spec ammunition, the PMAG 20 LR/SR GEN M3 Window weighs less than half of standard steel magazines and maintains a service life round count approximately equal to the rifle barrel itself. Accessories designed for the 7.62X51 NATO line of PMAGs are also compatible with this model.