FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Can a 25 rd magazine be bought? Expert Answer

I believe they only make them in 10 round.

by Tom B, Gear Expert, October 15, 2021
Customer Reviews
Most Recent Reviews Very fun but needs break-in by Geof Wickett, February 24, 2022
I have only used it once so with about 100 rounds. I’m using mini mags but it jambs a lot. It was starting to get better towards the end. But probably needs another 100 to work well. I am hoping it does get better when it cycles it is a lot of fun to...
Read More...
Most Recent Reviews Plinking on the cheap by Bruce, May 14, 2021
This is awesome. I bought this item and took it to the range. 50 rounds of 22LR not a single misstep. I swapped the bolt carrier on the range bench jammed in my 5.56 Mag and shot those down range. Awesome product, highly recommend.
Read All 2 Reviews
Color: Black Gun Model: AR-15 Magazine Capacity: 10 RoundCaliber: .22 Long Rifle Quantity: 1 Included Accessories: 1 Magazine Condition: New

Code: 2CM-CNC-LOMN-54BA6AC-10RD

MPN: 54BA6AC

UPC: 810046231937

List: $199.95Save 10%
$180.49

Certain firearm magazines and extensions are subject to maximum capacity restrictions based on state and local laws. Currently, we are unable to sell these products to some locations. For a complete list of these restrictions, please visit our policy page.

By continuing with your purchase, you agree to adhere to all applicable laws and regulations.  

Product Info for CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd

Easily convert your CMMG 5.7x28mm Upper Receiver Group into a .22LR in seconds! The new Mk57 .22LR Conversion Kit is simple to use. Just remove the existing CMMG 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/Mk4 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 Mk57 5.7x28mm upper receiver groups and bolt/barrel combinations when paired with an AR15 Lower.image

Specifications for CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd:

Manufacturer: CMMG
Color: Black
Fabric/Material: Stainless Steel
Magazine Capacity: 10 Round
Caliber: .22 Long Rifle
Gun Model: AR-15
Quantity: 1
Included Accessories: 1 Magazine
Condition: New
Magazine Included: No

Features of CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd

  • Stainless Steel Construction
  • Compatible with all CMMG MK57 Uppers
  • Magazine Fits in Mil-Spec AR15/MK4 lowers
  • Simple Installation No Tools Required

Package Contents:

  • CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd

CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd Orderable Models

List of Orderable Models

CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd, Black, 54BA6AC , MPN: 54BA6AC , UPC: 810046231937 , Code: 2CM-CNC-LOMN-54BA6AC-10RD

CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd Unavailable & Discontinued Models

List of Unorderable Models

DEMO, CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd, Black, 54BA6AC , MPN: 54BA6AC-DEMO , Code: 2CM-CNC-LOMN-54BA6AC-DEMO-10RD
DEMO, CMMG, Inc 22LR AR Conversion kit, Mk57, 10rd, Black, 54BA6AC , MPN: 54BA6AC-DEMO , Code: 2CM-CNC-LOMN-54BA6AC-10RD-DEMO
Compare (0)