I am a customer of Rusan products and i like this brand, but i feel your picatinny rail for CZ 527 and overally for 16mm dovetail has some disadvantages:
1. It should be mounted on a small bore rifle, steel rail is heavy for such fine and light weight guns, i think aluminum is more suitable
2. Over the rail of Brno 2 and Zkw 465 there are some engraving marks and if your picatinny rail is fixed with vertical screws like your rail for CZ 550, these marks may be scrached, i think laterally locking screws like what recknagel produced for CZ 550 is more suitable.
(Posted on 15/12/2015)