Experience reliability and efficiency with the Magpul PMAG 20 LR/SR GEN M3 Window Magazine, designed for SR25/M110 pattern rifles utilizing .308/.762x51 NATO cartridges. This lightweight, 20-round magazine is engineered with a next-generation polymer that ensures impact resistance and durability, featuring dual transparent windows for quick round counting. Next-generation impact and crush-resistant polymer construction High-quality stainless steel spring for corrosion resistance Anti-tilt, self-lubricating follower Anti-glare translucent MagLevel windows on both sides of the body Weighs less than standard-issue steel magazines Ribbed gripping surface and aggressive front and rear texture A paint pen dot matrix at the bottom panel of the body Enhance your shooting experience with unmatched performance and simplicity.