More importantly, this new Banshee marks the first time a shoulder-fired weapon chambered in 5.7mm operates via locked breech. Should be very interesting. CMMG's new 40-round 5.7mm magazines for ...

Glock-magazine-compatible ARs continue ... Missouri-based CMMG, however, is a rare exception because its Banshee product line instead uses radial delayed blowback (RDB) designs.

CMMG Inc. has just launched the new MK4 Banshee line of short-barrel, compact AR pistols and ATF-regulated Short Barrel Rifles (SBR). The line-up currently includes 8" barrel, gas-operated .