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The PMAG 20 LR/SR GEN M3 is engineered for shooters who demand a compact magazine that doesn't compromise on reliability. Built for SR25, M110, and other LR/SR-pattern rifles chambered in 7.62×51 NATO (.308 Winchester), this 20-round mag delivers everything the GEN M3 line is known for in a low-profile form factor.
Magpul packed next-generation features into this magazine without the bulk. The crush-resistant polymer body handles impacts, temperature swings, and regular use without cracking or warping. Inside, a long-life stainless steel spring resists corrosion and maintains consistent pressure through the magazine's service life. The constant-curve internal geometry and anti-tilt follower work together to feed rounds smoothly, even under recoil or when running rapid drills.
The 20-round capacity hits a sweet spot for precision platforms and hunting applications. You get plenty of rounds without the weight penalty of larger magazines. A flared floorplate makes extraction effortless and improves handling during reloads, while the aggressive texturing on the front and rear gives you confident control in any condition. The slimmer design fits standard magazine pouches better than older polymer designs, and low-profile ribs reduce snag points when moving through gear or tight spaces.
The OD Green finish matches common rifle finishes and blends well in the field. Paint pen dot matrix panels on the bottom let you mark your magazines for easy identification. Tool-less disassembly means field cleaning takes seconds. This magazine is less than half the weight of comparable steel alternatives while maintaining a service life roughly equal to your rifle's barrel—a major advantage when you're carrying gear over distance.
This magazine is designed for SR25/M110 pattern rifles and compatible with most modern .308 ARs built on the SR25 platform, including Ruger SR-762, Ruger Precision Rifle, KAC SR25, LaRue OBR, S&W M&P10, SIG 716, and many others. It is not compatible with M14-pattern, FAL-pattern, or HK91/G3-pattern rifles, or AR-10B models. Always verify compatibility with your rifle's manual before purchasing.
The GEN M3 features reinforced polymer that performs better in extreme temperatures and resists impacts more effectively than previous generations. It also includes an improved over-insertion stop, more aggressive texturing, a slimmer floorplate for better magazine pouch compatibility, and paint pen dot matrix panels for custom marking. Internal feeding geometry remains reliable and proven, but the construction is more durable across the board.
The compact 20-round profile works well for precision rifles, hunting applications, and situations where you want reduced weight and bulk compared to 25 or 30-round magazines. Many precision shooters prefer this capacity because it works with conventional shooting positions and magazine-fed bolt actions without adding unnecessary length.
Yes. The stainless steel spring maintains consistent pressure over time, and the crush-resistant polymer doesn't degrade from being fully loaded. However, some shooters prefer keeping magazines loaded to 15-18 rounds during long storage periods as a general practice to reduce spring compression stress—a preference rather than a requirement with quality magazines like the PMAG.
| UPC | 840815150855 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAG291-ODG |
| Caliber/Gauge | .308 / 7.62 NATO |
| Capacity | 20 |
| Color | Olive Drab Green |
| Model | |
| Product Type | Magazine |
| Quantity | 1 |
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