Like many of us, you'd like to get out and hit the range more often. Who wouldn't? With the volatility of ammo prices in the last couple of years, it's sometimes pretty easy to talk yourself out of making the trip due to the cost depending on your caliber of choice. After all, not everything is as cheap to shoot as .22LR.
Enter the CMMG® .22 Conversion Kits. Introduced in 2010 they have been one of the most beloved and popular CMMG products ever produced to date. If the notion of dropping one of these kits into your AR15 and plinking away for pennies in comparison to what it might normally cost you is appealing, then the next question you want answered might be "So which .22 conversion kit do I need?" or "What's the difference between Bravo, Echo, & Mk57™?". So let's dive in!
There are a few different options when it comes to our conversion kits, the basics to keep in mind though are that the BRAVO and ECHO kits (either left or right-side ejection variants) are made to convert an AR15 chambered in 5.56 NATO or .223 Rem to .22LR.
Mk57 conversion kits are made specifically for CMMG Radial Delayed Blowback™ ARs chambered in 5.7x28mm and will not function in a 5.56/.223 caliber AR.
Echo vs. Bravo Differences
Echo kits (5.56/.223 to .22LR) include an anti-jam charging handle and forward assist adapter with the conversion bolt assembly and magazine(s).
Bravo kits (5.56/.223 to .22LR) come with the conversion bolt assembly and magazine(s).
Brass Collar Echo & Bravo Kits
If you have browsed our collection of .22 Conversion Kits you may have noticed that some Bravo and Echo variants come with a brass collar instead of the typical stainless one. This visual difference indicates that those .22 conversion kits are meant for left -hand ejection 5.56/.223 uppers.