Description
CMMG 5.7×28 MK57 22LR Conversion Kit w/ One 10 Round Magazine
**THIS KIT IS FOR CONVERTING 5.7X28MM TO 22LR ON OUR 5.7 CONVERSION UPPERS ONLY AND WILL NOT WORK WITH .223/5.56 CHAMBERED RIFLES OR THE CMMG MK57 LOWER**
Easily convert your 5.7x28mm Upper into a .22LR in seconds! The new Mk57 .22LR Conversion Kit is simple to use. Just remove the existing bolt carrier group from your 5.7×28 upper and replace it with the drop-in conversion. Pair the upper with any Mil-Spec AR15 lower receiver and then use the included magazine to safely shoot .22LR. It’s a great way to get in more trigger time while saving money on ammo. This conversion kit is designed for use with all CMMG 5.7x28mm upper receiver groups and bolt/barrel combinations when paired with an AR15 Lower.
Kit Includes
-5.7×28 to 22lr conversion BCG
-One 10 Magazine
– Stainless Steel Construction
– Compatible with all CMMG Mk57 Uppers/Upper using CMMG 5.7×28 Barrels.
– Magazine Fits in Mil-Spec AR15/Mk4 lowers
– Simple Installation — No Tools Required
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