I didnt like that leverlution in mine. Shoots way different and the brass seems to be thin confounding reloading. The button on the magazine spring is made for a round nose, and marlins don't like different OAL. my old eye problem was solved with a foolproof. Sight for 75 and realize what you have

I also found that the non existent throate will not take .357 bullets loaded to the right length. loaded short enough to chamber and you get the marlin jam.

This is a carbine I thunk I always wanted, found one at a bargain and sure enuff it is not a colorado gun. Had Pennsylvania roots, see through mounts, kmart 4x and loose screws