Inter-Store Transfer

If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. You will be notified by email once your item has arrived at the destination.
*Not compatible with Mk57 Lower Groups or 5.56/.223 uppers.
 The CMMG Mk57 .22LR Kit allows for easy conversion of your 5.7x28mm upper receiver group to shoot .22LR.
Simply remove the BCG from your CMMG 5.7 upper and replace with the drop-in conversion.
This kit is designed for the CMMG Mk57 5.7x28mm upper receiver groups and bolt/barrel combinations when used with an AR15 lower.
**THIS KIT IS FOR CONVERTING 5.7X28MM TO 22LR ON CMMG 5.7 CONVERSION UPPERS ONLY. WILL NOT WORK WITH .223/5.56 CHAMBERED RIFLES OR MK57 LOWER **  

Features

5.7×28 to 22lr conversion

Three 10rd Magazines

Stainless Steel Construction

Compatible with all CMMG Mk57 Uppers

Magazine Fits in Mil-Spec AR15/Mk4 lowers

Simple Installation — No Tools Required

Restrictions
Magazine capacities are regulated in many states and jurisdictions.  Please understand your local laws prior to ordering. Click here for detailed information on magazine capacity restrictions .