
The Magpul PMAG 20 LR/SR GEN M3 (MAG290-BLK) is a lightweight, ultra-reliable 20-round polymer magazine designed for 7.62 NATO / .308 Winchester calibre rifles. Trusted by military, law enforcement, and precision shooters across the globe, this next-generation mag is compatible with SR25-pattern platforms including the Ruger Precision Rifle, LMT .308, Armalite AR-10A, and more.
The GEN M3 series brings refinements in strength, geometry, and feeding reliability. Featuring a redesigned internal geometry, anti-tilt follower, and constant-curve body profile, it delivers consistent, jam-free feeding even under high cyclic rates or adverse conditions. The over-travel stop and ribbed gripping surface give added security in tough handling environments.
Tested from combat zones to long-range competitions, this is the mag you can count on when every shot matters. Made in the USA and backed by Magpul’s proven reliability, the MAG290-BLK is the gold standard for .308 magazine performance.
SPECIFICATIONS
Model: MAG290-BLK
Calibre: 7.62 NATO / .308 Win
Capacity: 20 rounds
Material: Advanced impact-resistant polymer
Follower: Anti-tilt, self-lubricating
Compatibility: SR25 / DPMS / Armalite AR-10A pattern rifles
Features: Over-travel stop, flared floorplate, paint pen dot matrix
Colour: Black
Weight: Approx. 226g
Made in: USA