Armstrong Enterprises is proud to offer our version of the CZ .22 rifle magazine in lightweight carbon fiber polymer.
While the gen 2.5 was running about 98% reliability across different 457's, the main point of failure was the round feeding with the nose too high up, and not feeding because it would strike the top of the chamber. The new 2.6 follower is designed to have less front to back play; resulting in the round staying more level as it feeds. But again, I only have my own personal 457 to use as a test platform, so please let me know if there are any issues.
Designed to fit model 457, and they work well in mine.
These are made from carbon fiber polymer, so have a rough/grippy texture on them. With the new tighter fitting follower they do need an extended break in period to smooth out. One thing we have found very helpful is to use a brand of ammo that has case lube the first few times you use the magazine.
Because I designed these for my factory stock 457, I can not warranty them for use with a chassis or aftermarket barrel.