No question about it, CMMG is making some of the best “conversion caliber” AR-15 upper receivers and magazines on the market. In the video above, I hit the range with the Radial Delayed Blowback 9mm and the direct blowback .22 LR CMMG Banshee 300 uppers.
Short version: they rock. Full, written review with photos and details of the inner workings coming soon.
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