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 our 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; this flared floorplate also improves drop protection and is slim enough to ensure better compatibility with tight double magazine pouches. The magazine is also simple to disassemble and makes for easy cleaning and maintenance when necessary.
Designed specifically for SAAMI-spec ammunition, the PMAG 20 LR/SR GEN M3 Window is less than half the weight of standard issue 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 the PMAG 20 Window.
Made in the USA.
20-ROUND RELIABILITY
Next-generation impact and crush-resistant polymer construction with a high-quality stainless steel spring for corrosion resistance
Anti-tilt, self-lubricating follower and constant-curve internal geometry ensure smooth feeding
Anti-glare translucent MagLevel windows on both sides of the body and painted indicator on the spring allow for easy determination of rounds remaining
ENHANCED ERGONOMICS
Weighs less than standard-issue steel magazines
Ribbed gripping surface and aggressive front and rear texture for positive magazine handling
Flared floorplate aids extraction and handling while providing improved drop protection and better compatibility with tight double magazine pouches
EASY IDENTIFICATION
A paint pen dot matrix at the bottom panel of the body allows easy marking for identification
EXPORT NOTICE: This is an item controlled for export by the Export Administration Regulations (EAR) under the Commerce Control List (CCL). These controls take the form of export regulations and license requirements. As part of the express consideration provided for receipt of Magpul's goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Magpul in violation of U.S. law is prohibited. Customers acquiring controlled goods, technical data and/or services from Magpul shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws. (See Magpul Compliance Notices page for more information).
PLEASE NOTE: Certain U.S. jurisdictions restrict firearm magazines sales. Magpul Industries cannot process sales/shipments prohibited by law. A list of states and municipalities restricting firearm magazine sales is available here.
WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Magpul Industries shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.
Technical Specifications
More Information
Caliber
7.62x51mm / .308 Winchester
Platform
AR10, M110, SR25
Capacity
20
Weight
5.8 oz.
Length, max
6.5 in.
Compatibility
Armalite AR-10A, Colt LE901-16S, CORE Rifle Systems CORE30, JP Enterprises LRP-07, KAC SR25, LaRue OBR, Les Baer .308, LMT .308 MWS, LWRCI REPR, Mega Arms MATEN, Noveske Gen III N6, POF P-308, Ruger SR-762, S&W M&P10, SIG716, and others*
Other Specs
Optimized for use with SAAMI-spec 7.62x51/.308 Winchester ammunition.
*NOTE: Compatible with older model Bushmaster .308 ORC, Remington R-25, and DPMS LR308 rifles, but not optimized for bolt lock functionality with newer models based on the DPMS GII design. NOT compatible with Armalite AR-10B, Springfield Armory M1A, Rock River Arms LAR8, FN SCAR 17S, PTR-91, HK417 or any other rifles that utilize M14, FN FAL, or HK 91/G3 patterned magazines.
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