Magpul PMAG 20 LR/SR Gen M3 Window .308 Magazine
Lightweight 20-round polymer magazine for SR25/M110 pattern rifles in .308 Winchester. Features dual-side transparent windows with MagLevel round-count system, stainless-steel spring, and aggressive texturing for reliable feeding and positive grip.
Fits: SR25
Magpul PMAG 20 LR/SR Gen M3 Window Magazine
The PMAG 20 LR/SR Gen M3 Window is a purpose-built magazine for SR25 and M110 pattern rifles chambered in 7.62x51 NATO (.308 Winchester). It represents the modern standard for precision rifle magazines—lightweight, reliable, and built to last.
Construction and Design
Manufactured from next-generation impact and crush-resistant polymer, this magazine weighs less than half that of standard steel magazines while maintaining comparable durability. The constant-curve internal geometry ensures continuous, reliable feeding of SAAMI-specification ammunition throughout the magazine's service life, which matches the lifespan of your rifle barrel.
MagLevel Round-Count System
Dual-side transparent windows allow you to quickly estimate remaining rounds without removing the magazine from the rifle. A high-visibility indicator coil on the spring and numerical markers on the magazine body provide fast visual feedback—no guessing required. This proprietary system maintains full reliability and durability.
Reliability Features
- Stainless-steel spring resists corrosion in all environments
- Anti-tilt, self-lubricating follower ensures smooth, consistent feeding
- Low-profile ribs and aggressive texturing provide positive grip for magazine changes in any condition
- Flared floorplate aids extraction, improves drop protection, and fits snugly in tight double magazine pouches
Practical Details
The magazine disassembles easily for cleaning and maintenance. A paint pen dot matrix on the bottom panel allows you to mark magazines for quick identification. Compatible with accessories designed for the 7.62x51 NATO PMAG line.
Made in the USA.
Features
- next-generation impact and crush-resistant polymer construction
- high-quality stainless steel spring for corrosion resistance
- anti-tilt, self-lubricating follower
- anti-glare translucent maglevel windows on both sides of the body
- weighs less than standard-issue steel magazines
- ribbed gripping surface and aggressive front and rear texture
- a paint pen dot matrix at the bottom panel of the body
- fits most ar10 platforms
- anti-tilt follower
- translucent maglevel windows
