CMMG uppers are at Brownells here:
Hitting the range with CMMG‘s Banshee 300 upper receivers in radial delayed blowback 9mm and straight blowback .22 LR flavors, both run on a select-fire (full-auto / machine gun) lower receiver. These CMMG setups are some of my favorite parts in the gun industry. They’re just awesome!
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Where did you find the uppers? Been looking myself.
nice , didn't know they sell full auto lowers to the public anymore. Glad to see we still have (some) free states left.