CMMG 5.7x28mm MK4/AR15 10rd Magazine

The CMMG 5.7x28mm MK4/AR15 10-round conversion magazine is built to provide reliable feeding for CMMG 5.7x28 Radial Delayed Blowback uppers and MK4/Mil-Spec AR-15 lower receivers. It features a revised external texture and 5.7x28mm side engraving for clear identification. The magazine is finished in matte black and supplied in a 10-round capacity appropriate for conversion setups and compact handling.

Key Specifications

• The capacity is 10 rounds.
• The caliber is 5.7 x 28 mm.
• Designed to fit CMMG MK4/AR15 lower receivers.
• The finish is Matte.
• The color is Black.
• The product type is Magazine.
• The subcategory is Rifle Magazines.
• Features a stylized texture grip and upgraded feed lips for handling and reliable seating.
• The listed weight is .354.

Purpose-built for owners of CMMG 5.7x28 uppers and MK4/Mil‑Spec AR-15 lowers, this magazine provides an OEM-matching form factor and feed geometry intended to integrate with CMMG conversion systems. Its revised texture and upgraded feed lips focus on consistent function and positive magazine handling in a compact, 10-round package suitable for range and personal gear setups.