Which .22lr Conversion is For You

Published on October 17, 2025
Duration: 4:55

This video from CMMG clarifies the differences between their .22LR conversion kits, focusing on the Bravo, Echo, Left-Handed, and Mark 57 models. It helps users select the correct kit based on their firearm's configuration and intended use, emphasizing key identifiers like 'LH' for left-handed kits and the specific compatibility of the Mark 57 kit.

Quick Summary

CMMG offers several .22LR conversion kits for AR-15s: the Bravo (basic kit with bolt and magazine), the Echo (Bravo plus forward assist adapter and anti-jam charging handle), the Left-Handed (LH) kit for left-handed ejection AR-15s, and the Mark 57 kit for 5.7x28mm chambers.

Frequently Asked Questions

What is the main difference between the CMMG Bravo and Echo .22LR conversion kits?

The Bravo kit is the basic package, including the conversion bolt and magazine(s). The Echo kit is an upgraded Bravo kit that comes with a forward assist adapter and an anti-jam charging handle for improved training and reliability.

How can I identify a CMMG left-handed .22LR conversion kit?

CMMG left-handed conversion kits are identified by the 'LH' designation. These kits are specifically designed for AR-15s with a left-handed ejection port and are not compatible with standard right-handed firearms.

Which CMMG .22LR conversion kit is for the 5.7x28mm cartridge?

The CMMG Mark 57 conversion kit is specifically designed for CMMG's Mark 57 uppers chambered in 5.7x28mm. It will not work with standard .223 or 5.56 NATO chambers.

What does the anti-jam charging handle on the Echo kit do?

The anti-jam charging handle on the Echo kit helps prevent malfunctions by preventing .22LR shell casings, which are the same size as the inside of a charging handle, from getting jammed during operation.

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