Magpul’s New PMAG 20 LR/SR GEN M3 Magazine Has Round Count Verification Window

Magpul adds windowed PMAG 20 LR/SR GEN M3 variant to its 7.62x51 mm NATO/.308 Win. magazine lineup.

by
posted on November 4, 2024
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Magpulpmagwindow 762Mm 3
Having a window on your magazine for round count verification can be convenient. Now, Magpul has released a windowed variant of its PMAG 20 LR/SR GEN M3 magazine for those seeking more compact 7.62x51 mm NATO/.308 Win. (or other similarly sized cartridges with a COAL of 2.830 inch) magazine for their SR25/M110 pattern rifles.
Photo courtesy of Magpul

Magpul’s new PMAG 20 LR/SR GEN M3 Window magazine is a 20-round magazine with dual-side transparent windows for SR25/M110 pattern rifles chambered in 7.62x51 mm NATO (.308 Winchester).

Thanks to the windows, you can easily conduct a quick count of the approximate number of rounds remaining in the magazine via a high visibility indicator coil on the spring and numerical markers on the magazine body.

PMAG with window
This new magazine provides the ability to see the number of rounds remaining in the magazine with only a quick look. Plus, tool-less disassembly capability makes for easy cleaning and maintenance. (Photo courtesy of Magpul)

 

This proprietary capability—the MagLevel system—provides a fast round-count estimation without affecting the durability or reliability of the magazine. Like Magpul’s other PMAGs, the 20-round LR/SR GEN M3 Window magazine includes a stainless-steel, corrosion-resistant spring, along with an anti-tilt, self-lubricating follower. The magazine’s lines follow a constant-curve internal geometry for continuous reliable feeding. The low-profile ribs and aggressive front and rear texturing help give shooters a positive grip for magazine changes in all environments.

A paint pen dot matrix at the bottom panel of the body allows shooters to easily marking these magazines. In addition, a flared floorplate aids extraction and handling of the magazine and improves drop protection and ensures better compatibility with tight double- and triple-magazine pouches.

Magpul windowed PMAG
Molded of next-generation impact and crush-resistant polymer, this new magazine also accepts Magpul magazine accessories for the 7.62x51 mm NATO lineup of PMAGs. (Photo courtesy of Magpul)

 

The magazine is also simple to disassemble and makes for easy cleaning and maintenance when necessary. Designed specifically for SAAMI-spec ammunition, the PMAG 20 LR/SR GEN M3 Window 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.

MSRP is $24.95. Magpul PMAG 20 LR/SR GEN M3 Window magazines are avaialble in two colors, Black and Medium Coyote Tan. Learn more at magpul.com.

Latest

1A Mauser M98
1A Mauser M98

New Mauser M98 Das Original Bolt-Action Rifle Includes .300 Win. Mag. Chambering

Mauser updates its classic M98 with DLC bolt components, Grade 5 wood and new calibers including a first-ever .300 Win. Mag. option.

Winter Olympic Biathlon: Skiing and Shooting at 180 BPM

A history of Olympic biathlon, tracing its evolution from military patrols to a high-speed sport combining skiing and precision shooting under pressure.

New For 2026: Top Handguns

Eleven standout handguns—from race-ready steel to modular pistols and a modern revolver—highlight the biggest trends emerging from SHOT Show 2026.

New: Real Avid Master Collection for 1911

The 1911 Master Collection brings together tools, cleaning gear and chemicals in a single kit designed for straightforward at‑home maintenance of the classic handgun platform.

Collegiate Rifle: 2026 Patriot Rifle Conference Championship Results

Nebraska secures 2026 PRC Championship title in Fort Wayne with balanced scoring in both guns, topping Ole Miss and TCU for its first league title in two decades.

Kim Rhode Receives NSSF’s Top Honor at SHOT Show 2026

Olympic legend Kim Rhode is honored by NSSF for a career that reshaped competitive shooting and expanded its future.

Interests



Get the best of Shooting Sports USA delivered to your inbox.