CZ  teamed up with ATI to develop a tactical chassis for their semi-automatic rimfire platform, the 512. Chambered in 22 LR or 22 WMR, it comes with a 16.5″ barrel, 1/2×28 muzzle threads, top Picatinny rail, 6-position stock and higher magazine capacity than the standard gun. One of the best features of the 512 platform is that it uses the same reliable single-stack mags as the 455.

Caliber: 22LR
Magazine Capacity: 25 Rounds
Magazine Type: Polymer Single Stack
Stock: 6-Position Adjustable, Adjustable Comb Height
Length Of Pull: 12-15.25 in
Sights: Picatinny Rail
Barrel: Cold Hammer Forged
Barrel Length: 16.5 in, threaded 1/2×28
Overall Length: 33-36.25 in
Weight: 6.1lbs
Trigger Mech: Non-Adjustable
Safety: Crossbolt