Confused on which mags to buy? Check out our article: “Differences between Gen 2 & Gen 3 PMAGs.”
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PRODUCT DETAILS
The 7.62×51 NATO (.308 Winchester) PMAG 20 LR/SR GEN M3 is a lightweight, cost effective, highly reliable magazine for SR25/M110 pattern rifles. It features true 20-round capacity, a constant-curve body, an anti-tilt follower, and a snap on impact / dust cover.
Our GEN M3 PMAGs feature a long-life stainless steel spring, an anti-tilt, self-lubricating follower, and constant-curve internal geometry for reliable feeding.
Low profile ribs and an aggressive front and rear texture give positive control of the GEN M3 in all environments, and a paint pen dot matrix at the bottom panel of the body to allow easy marking by the end user for identification. The easy-to-disassemble flared floorplate aids extraction and handling of the magazine while providing improved drop protection, and better compatibility with tight double and triple magazine pouches. An included pop-off impact / dust cover can be used to minimize debris intrusion and protect against potential damage to the top cartridge during storage and transit. Its simple, tool-less disassembly makes for for easy cleaning and maintenance.
Designed specifically for SAAMI-spec ammunition, the PMAG 20 LR/SR GEN M3 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.
Made in the USA.

20-ROUND RELIABILITY
Anti-tilt, self-lubricating follower, a high-quality stainless steel spring, and constant-curve internal geometry ensure smooth feeding
EASY IDENTIFICATION
Use the paint pen dot matrix to easily identify your different loads when it’s crunch time


RUGGED MAGPUL POLYMER
Next-generation impact and crush-resistant polymer construction with a high-quality stainless steel spring for corrosion resistance
Ribbed gripping surface and a new aggressive front and rear texture for positive magazine handling
TOP-TO-BOTTOM SECURITY
The multi-use impact / dust cover minimizes debris intrusion and protects cartridges from potential damage during storage and transit
Flared floorplate aids magazine handling and disassembly
Jeeves (verified owner) –
These work great in my Sp10 and Sr25. I would choose the m118lr version if you have the choice. Having more room is typically better. But typical Magpul reliability.
Dorsey (verified owner) –
For a general usage, not-pushing-SAAMI length 6.5CM mag for large frame ARs, these mags do great. I’ve run up to both factory and handloaded 147gr ELD-Ms out of them.
Matt Amp (verified owner) –
My favorite .308 magazine. 20rds is just right.
joeyjanlife (verified owner) –
QUALITY Mag. Fast shipping. Cant beat BTO
Michael Herz (verified owner) –
Quality magpul magazine at a competitive price with super fast shipping and world class customer service. Will buy again