The PMAG 20 LR/SR GEN M3 Window is a lightweight, cost-effective and highly reliable 20-round magazine tailored for SR25/M110 pattern rifles chambered in 7.62x51mm NATO (.308 Win). Constructed from next generation, impact-resistant polymer, it features dual-side transparent windows for quick and easy round count estimation, enhanced by a high-visibility indicator coil and numerical markers thanks to the innovative MagLevel system. This feature provides fast round count visibility without compromising durability or performance. Built with a corrosion-resistant stainless steel spring and an anti-tilt, self-lubricating follower, the magazine's constant-curve geometry ensures smooth, consistent feeding. Its low-profile ribs and aggressive texturing offer a secure grip for efficient magazine changes in any environment. The flared floorplate aids in extraction, provides drop protection and is slim enough for compatibility with tight double magazine pouches. Easy to disassemble for cleaning and maintenance, this magazine also boasts a service life round count comparable to the rifle barrel itself. Weighing less than half of standard steel magazines, the PMAG 20 LR/SR GEN M3 Window is ideal for SAAMI-spec ammunition and is fully compatible with accessories designed for the 7.62x51mm NATO PMAG line.

Engineered with next generation impact- and crush-resistant polymer construction, this magazine offers superior durability while incorporating a high-quality stainless steel spring for enhanced corrosion resistance
The anti-tilt, self-lubricating follower and constant-curve internal geometry work together to ensure flawless feeding and reliable performance in high-stress situations
Anti-glare translucent MagLevel windows on both sides of the magazine, combined with a painted indicator on the spring, provide clear and easy round count visibility at a glance
Designed for lightweight efficiency, this magazine weighs less than standard-issue steel alternatives, reducing overall carry weight without compromising durability
A ribbed gripping surface with aggressive front and rear textures ensures positive handling and a secure grip
A flared floorplate aids in extraction and handling while providing improved drop protection and better compatibility with tight double magazine pouches
A paint pen dot matrix on the bottom panel of the body allows for easy identification marking

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It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

It is the customer’s responsibility for understanding state laws regarding magazine capacities. Palmetto State Armory abides by all state regulations regarding the sale of high capacity magazines. We DO NOT ship high-capacity magazines with firearms to certain states. We WILL NOT replace high capacity magazines with state compliant magazines. We DO NOT offer refunds in place of the magazines. Please see our terms and conditions for a list or restricted states.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.

Magpul PMAG 20 LR/SR Gen M3 20rds 7.62x51mm/.308 Win, Black