I’ve put together two CMMG style dedicated ARs. They’ve been as reliable as you can expect for a 22lr.

My first was Spikes Tactical setup way before CMMG started making 22lr stuff. The design is the same. The 2nd was using the RTB parts and a Beyer’s sleeved barrel.

Both run great with blackdog mags. The RTB works great with smith mp22/15 mags and the catch22 spacers. The spikes gun is having some problems with those, but hopefully I can figure that out.


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