Illumined Arms

The Illumined Arms 22LR conversion kit, designed for the SIG MCX Rattler and Virtus, seamlessly integrates with CMMG's 22LR Bravo kit. Once integrated into your 5.56 MCX, it enables you to use various 22LR ammunition, including 22 subs, supers, and lead-free options, ensuring flawless function and reliability through the two adapter blocks.

The charging handle adapter smoothly inserts into the upper receiver alongside the Bravo kit, while the black spacer (Buff plug) drops into the lower receiver behind the Bravo kit. Upon reassembly, your MCX's charging handle will operate as usual, effortlessly racking the bolt.

Note: After firing 22LR rounds from your MCX, we recommend firing at least ten rounds of 5.56 through your barrel to clear the gas block and eliminate any residual material or carbon.

It's important to mention that this adapter kit is not compatible with aftermarket buffers. The Illumined Arms MCX adapter kit is available separately from the CMMG Bravo kit. The color of the item may vary.