Carry more confidence without the bulk. The PMAG 20 LR/SR GEN M3 Window gives SR25 / M110 pattern rifles a true 20-round profile with the proven feeding geometry, long-life stainless spring, and anti-tilt self-lubricating follower that keep rounds moving when it matters. Impact- and crush-resistant polymer construction shaves weight while protecting internals and the translucent MagLevel™ windows provide an instant visual round-count so you stay aware and in control. Lightweight, durable, and engineered for precision platforms, the PMAG 20 LR/SR GEN M3 Window is the go-to mag for shooters who demand capacity, reliability, and situational awareness.
Made in the USA.
Features
True 20-round capacity for SR25 / M110 pattern rifles chambered in 7.62×51 NATO (.308 Winchester)
Anti-tilt, self-lubricating follower, long-life stainless spring, and constant-curve internal geometry for smooth, reliable feeding
Impact- and crush-resistant polymer body engineered for long service life and field abuse
Dual MagLevel windows with painted indicator coil for instant visual round-count confirmation
Flared, easy-to-grip floorplate for fast handling and improved extraction from tight pouches
Low-profile ribs and aggressive texture deliver positive control in all conditions
Paint-pen dot matrix on the bottom panel enables rapid load identification in the field
Designed for SAAMI-spec ammunition and optimized for reliable function in SR25/M110 platforms
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.