CMMG MK4/AR-15 5.7x28mm 10-Round Magazine – AR-15 Platform

The CMMG MK4/AR-15 5.7x28mm 10-round magazine is purpose-built for AR-15 platforms chambered in 5.7x28mm. Designed to work seamlessly with CMMG's 5.7x28mm AR conversions and uppers, this magazine features a reliable follower system engineered specifically for the bottleneck 5.7x28mm cartridge, ensuring consistent feeding in a platform originally designed for .223/5.56mm.

Constructed from durable polymer with heat-treated steel feed lips, this magazine includes CMMG's proven follower design that accommodates the 5.7x28mm's unique dimensions. The 10-round capacity makes this magazine compliant in restricted states. Compatible with standard AR-15 magazine wells when paired with CMMG 5.7x28mm conversion systems.

• Caliber: 5.7x28mm
• Capacity: 10 rounds
• Compatible Firearms: AR-15 platform with CMMG 5.7x28mm conversion/upper
• Material: Polymer body, steel feed lips
• Follower Type: 5.7x28mm-specific
• Includes: One 10-round magazine