CMMG 5.7 AR Conversion AR-15 Magazine - 40 Round

Manufactured by CMMG
Manufactured by CMMG
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$29.99 $34.99

Out of Stock

NOTE: Limit 10 per household. Quantities exceeding 10 will not allow checkout.

Magazines considered High Capacity are controlled by the ATF and/or local jurisdictions are not available for purchase/shipment in all areas.



The CMMG 5.7x28 Magazine is designed for use with Mil-Spec AR-15 lower receivers with the CMMG 5.7 Radial Delayed Upper Receiver. Allows you to convert an existing AR lower for use with the popular 5.7x28 round without having to buy a proprietary lower. This 5.7 magazine holds 40 rounds of ammunition and features last round hold open functionality. It is recommended to use a standard carbine buffer and spring for reliability with this setup.

  • For use with CMMG 5.7 radial delayed upper
  • Compatible with Mil-Spec AR-15 lowers
  • 40 Round capacity
  • Polymer construction
  • Last round bolt hold open

A leading manufacturer of AR-15 rifles, kits, and accessories, CMMG Inc. was established in 2002. Constantly pushing the edge, CMMG strives to develop and improve bringing you a product lineup that is second to none.
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Caliber Gauge5.7X28mm
Magazine Capacity40
PlatformAR-15 Magazines

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