CMMG 22LR AR CONV KIT 25RD

Description

The CMMG Echo is a drop-in conversion kit designed for AR-15 owners who want to run .22 LR through the familiar platform they already train with. Rather than buying a dedicated rimfire rifle, you pull the rear takedown pin, remove the bolt carrier group and charging handle, and drop the Echo unit into your existing lower — no gunsmithing, no permanent modification. The result is a rifle that handles and operates identically to your standard AR-15, which means trigger time with the Echo carries over directly to centerfire practice.

The practical case for this kind of kit is straightforward: .22 LR costs a fraction of what 5.56 or .223 does per round, so the same training budget buys substantially more rounds downrange. Lower recoil is a secondary benefit — not because rimfire is inherently more accurate, but because less muzzle movement per shot lets a shooter observe their own errors in trigger press and grip more clearly, which accelerates skill development.

CMMG includes a dedicated charging handle with the kit rather than relying on your rifle’s existing one, which keeps the system self-contained. The 25-round magazine is purpose-built for the Echo and feeds .22 LR reliably in the AR form factor. One practical note from CMMG: a round-style hammer works better with this system than a notched hammer, and 36-grain plated-nose bullets have shown the most consistent function. If your lower uses a notched hammer, it is worth confirming compatibility before committing to a load.

The kit fits most standard AR-15 rifles chambered in .223 Remington or 5.56 NATO, making it a versatile option across a wide range of commercially available lowers.