CMMG’s 5.7 AR Conversion Magazine holds 10 rounds of 5.7x28mm and fits in any standard AR15 lower receiver. To use, simply attach a CMMG 5.7x28mm Radial Delayed Blowback complete upper receiver to an existing AR15 lower. Then, insert CMMG’s 5.7 AR Conversion Magazine to safely feed 5.7x28mm ammunition. CMMG recommends using a standard carbine buffer and action spring to reliably cycle the action in this configuration. The 5.7 AR Conversion Magazine also retains last round bolt hold-open functionality, allowing for faster reloads.
CMMG will ship your firearm to the licensed dealer (FFL Holder) of your choice. To expedite the shipment of your firearm -- please provide the name, along with phone number and email of your FFL Dealer in the notes field at the bottom of the checkout screen. If this field is left blank, we will contact you within a few business days to determine which FFL you would like us to ship your CMMG to. We ship firearms to all states except CA and NY.
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