Magpul PMAG GEN M3 30-Round Magazine for AR-15/M16/M4 - .223/5.56 NATO, Black

The Magpul PMAG GEN M3 30-round magazine for AR-15, M4, and M16 platforms is a workhorse polymer mag built to handle the demands of the range, competition, and field. Whether you're running a standard Colt-spec rifle or something less common, this next-gen PMAG delivers the reliability you need without fuss. It's made in the USA with impact-resistant polymer and modern manufacturing that far exceeds military performance standards—the kind of magazine you grab when you want one that simply works.

The GEN M3 design balances proven features with real-world improvements. Its constant-curve internal geometry feeds .223 Remington and 5.56 NATO ammo smoothly, while the anti-tilt follower and long-life stainless steel spring handle thousands of rounds. The redesigned rear bolt catch notch gives you more clearance, and an over-travel stop prevents the magazine from jamming during insertion on compatible weapons. You get tool-less disassembly for quick cleaning, a paint-pen dot matrix on the base so you can mark loads at a glance, and new low-profile ribs plus aggressive front and rear texturing for confident handling in wet, dusty, or cold conditions.

Capacity and fit matter too. At 30 rounds with a max length of 7.5 inches, this magazine fits comfortably in standard double and triple pouches—Magpul slimmed down the floorplate without sacrificing durability or the flared design that makes extraction and reloading faster. Beyond AR-15s, the modified geometry also supports wider STANAG 4179 compatibility, including HK 416, FN SCAR MK 16/16S, SA-80, and other modern platforms.

Key Features

• 30-round capacity for .223 Remington / 5.56 NATO
• Constant-curve internal geometry ensures reliable feeding across thousands of rounds
• Anti-tilt, self-lubricating follower for smooth operation
• Long-life stainless steel spring for durability and commonality
• Redesigned bolt catch notch with increased clearance
• Over-travel insertion stop prevents over-insertion on compatible weapons
• Tool-less disassembly for fast cleaning and maintenance
• Paint-pen dot matrix on base for easy load identification
• Low-profile ribs and aggressive texture for confident grip in all conditions
• Flared, slim-profile floorplate for faster reloading and pouch compatibility
• Impact-resistant polymer construction exceeds military specifications
• STANAG 4179 compatibility with AR-15, M4, M16, HK 416, SCAR, SA-80, and others
• Made in the USA

Specifications

Frequently Asked Questions

Will this 30-round PMAG GEN M3 work with my AR-15 or M4?

Yes. The GEN M3 is optimized for Colt-spec AR-15, M4, and M16 platforms. It also works with a range of STANAG 4179 pattern rifles, including HK 416, FN SCAR MK 16/16S, SA-80, and others due to its modified internal and external geometry.

Can I use this magazine with double and triple magazine pouches?

Yes. The slimmed-down floorplate is designed to fit snugly in standard double and triple pouches while maintaining the flared design for easier extraction and reloading.

Is the PMAG GEN M3 30-round magazine tool-free to clean?

Yes. The magazine disassembles without tools, making field cleaning and maintenance fast and straightforward.

What ammunition does this magazine feed?

The PMAG GEN M3 is chambered for 5.56x45mm NATO and .223 Remington ammunition.