The CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower) (part no. 54AFC44) is a 10-round 5.7 x 28 mm magazine built to fit the 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower). CMMG builds it for reliable feeding and a secure fit in the magazine well. It’s a solid pick for shooters who want a dependable spare for range, duty, and home-defense use. Whether you’re stocking up on spares or replacing a worn-out magazine, the CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower) is built to run when you need it.

Key Specifications

• Chambered for 5.7 x 28 mm ammunition.
• Holds 10 rounds per magazine.
• Built to fit the CMMG 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower).
• Features a new stylized texture grip with 5.7x28mm engraving on the sides.
• Uses upgraded feed lips for improved reliability.
• Manufactured by CMMG.

Frequently Asked Questions

How many rounds does the CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower) hold? It holds 10 rounds of 5.7 x 28 mm.

What does the CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower) fit? It’s built to fit the 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower). Always confirm fit against your exact make and model before ordering.

Buy the CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower)

Order the CMMG 10-Round 5.7x28mm Magazine for 5.7 AR Conversion Upper (Mk4/Mil-Spec AR15 lower) from our Lubbock, Texas gun shop for fast shipping. Browse more AR-15 magazines at Schaefer Defense.