The Magpul PMAG 20 AR/M4 Gen M3 is a polymer magazine designed for AR-15 and M4-compatible platforms. It accepts .223 Remington and 5.56x45mm NATO ammunition and features a 20-round capacity in a black finish.

Made in the U.S.A., the Gen M3 incorporates a stainless steel spring, four-way anti-tilt follower, constant-curve internal geometry, and tool-less disassembly for cleaning. Its redesigned bolt-catch notch, over-travel stop, textured body, marking dot matrix, and flared floorplate support practical handling and compatibility on suitable platforms.

Key Specifications

• The magazine holds 20 rounds of ammunition.
• It is chambered for .223 Remington and 5.56x45mm NATO.
• The magazine is compatible with AR-15 and M4 platforms.
• It uses a durable polymer body.
• The finish and color are black.
• The magazine features a four-way anti-tilt follower for controlled cartridge presentation.
• It includes a stainless steel spring built to USGI specifications.
• The product is supplied as 1 magazine.

With its compact 20-round format, practical maintenance features, and durable Gen M3 design, this PMAG is a straightforward option for compatible AR-pattern rifle setups, training, and range use.