CMMG Gen II 9mm 33-Round AR-15 Magazine (Black Polymer)

The CMMG Gen II 9mm magazine is a 33-round polymer magazine designed for use with Mk4/AR-15 lower receivers and CMMG 9mm radial delayed blowback uppers. It retains exterior dimensions that closely match common 5.56 AR-15 magazines to aid compatibility with existing mag pouches and carriers. The magazine features a Magpul-style P-MAG body and an internal last-round bolt hold-open function for operational convenience.

Key Specifications

• The capacity is 33 rounds.
• The caliber is listed as 9mm Luger (9x19).
• The material is Polymer.
• The finish is Black.
• The listed fit/application is AR Rifles.
• The listed application type is Centerfire Pistol.
• The exterior dimensions are 1.30 x 3.90 x 9.00 (as provided by the manufacturer).
• The weight is listed as 0.465 (as provided).
• Other features include a Magpul P-MAG body 9ARC and last round bolt hold-open.

This magazine provides a high-capacity, form-compatible option for range use, training, and competition setups where a CMMG Mk4 platform or compatible radial delayed blowback upper is employed. Its Magpul-style body and AR-15-compatible exterior profile make it a practical choice when carrying multiple magazines or using standard AR magazine pouches, while the internal last-round bolt hold-open supports predictable cycling and reload awareness.