Magpul Pmag M3 Window 7.62 20Rd Blk

The Magpul Pmag M3 Window 7.62 20Rd is a lightweight, purpose-built magazine for SR25 and M110 pattern rifles in 7.62x51 NATO (.308 Winchester). Whether you're running precision rifle matches, hunting at distance, or maintaining a dedicated .308 setup, this 20-round mag combines field-proven reliability with smart design features that make magazine management faster and easier. Built from durable polymer that resists impact and crushing, it weighs significantly less than traditional steel magazines while matching their longevity—Magpul rates service life approximately equal to your rifle barrel itself.

What sets the M3 Window apart is the MagLevel system: dual-side translucent windows let you count remaining rounds at a glance without breaking your sight picture. A high-visibility indicator coil on the spring and numerical markers on the body give you quick, accurate round-count estimation. The constant-curve internal geometry feeds reliably every time, while the anti-tilt follower and stainless-steel spring (corrosion-resistant) handle tough conditions without drama. Magazine changes stay smooth thanks to aggressive front and rear texturing and low-profile ribs that give you confident grip in gloved hands or adverse weather.

The flared floorplate makes extraction intuitive and adds drop protection—important when you're working magazines fast. It's also slim enough to fit snugly in double mag pouches without binding. For organization, a paint pen dot matrix on the bottom lets you mark mags by load, mission, or shooter. Field maintenance is straightforward: the magazine disassembles easily for cleaning. This mag is designed for SAAMI-spec ammunition and plays well with other 7.62x51 PMAG accessories.

Key Features

• 20-round capacity for SR25/M110 pattern rifles in 7.62x51 NATO
• MagLevel translucent windows on both sides for quick round-count verification
• Impact and crush-resistant polymer construction, significantly lighter than steel mags
• Stainless-steel spring resists corrosion in all environments
• Anti-tilt, self-lubricating follower ensures reliable feeding
• Constant-curve internal geometry for continuous, trouble-free feeding
• Aggressive texturing and low-profile ribs for secure handling and fast mag changes
• Flared floorplate aids extraction and adds drop protection
• User-friendly paint pen dot matrix for mag identification
• Simple disassembly for cleaning and maintenance

Specifications

Frequently Asked Questions

Will this magazine work in my .308 rifle?

The Pmag M3 Window 7.62 20Rd is designed for SR25 and M110 pattern rifles chambered in 7.62x51 NATO (.308 Winchester). If your rifle follows that pattern and uses SAAMI-spec ammunition, this magazine is compatible. If you're unsure about your rifle's pattern, check your manual or contact us.

How do I know how many rounds are left without opening the mag?

The MagLevel system does that for you. Translucent windows on both sides of the magazine let you see the high-visibility indicator coil on the spring and the numerical markers on the body, giving you a quick and accurate estimate of remaining rounds without removing the magazine from your pouch or rifle.

Is this magazine lighter than steel?

Yes. The Pmag M3 Window weighs significantly less than standard-issue steel magazines, making it ideal if you're managing weight on a long-range rifle or running multiple mags in the field.

What comes in the box?

The listing specifies the magazine itself. For details on included accessories or additional items, contact us directly.