The CZ-550 is probably my favorite commercial rifle but keep in mind that some calibers have a detachable magazine, while others have a regular box magazine. The detachable magazine cannot be loaded without removing the magazine and I found that to be a minor pain.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.