The PMAG 20 LR/SR GEN M3 Window is a lightweight, cost effective, highly reliable 20-round magazine for SR25/M110 pattern rifles chambered in 7.62x51 NATO (.308 Winchester). Constructed from next-generation impact and crush-resistant polymer, the new magazine features durable, dual-side transparent windows which allow for a quick count of the approximate number of rounds remaining in the magazine via a high visibility indicator coil on the spring and numerical markers on the magazine body. This proprietary capability, known as the MagLevel system, provides a fast round-count estimation without affecting the durability or reliability of the magazine. Like their other PMAGs, the 20 LR/SR GEN M3 Window magazine features a stainless-steel, corrosion-resistant spring and an anti-tilt, self-lubricating follower. The magazine's lines follow a constant-curve internal geometry for continuous reliable feeding. The low-profile ribs and aggressive front and rear texturing help give shooters a positive grip for magazine changes in all environments. A paint pen dot matrix at the bottom panel of the body allows easy marking by the end user for identification purposes. Other standard features include a flared floorplate that aids extraction and handling of the magazine

• 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

Magpul Industries Magazine, PMAG 20 LR/SR GEN M3 with Window, 308 Winchester/762NATO, 20 Rounds, Fits DPMS/SR25/LaRue OBR, Coyote Tan MAG1429-MCT