My levers, including my 375 Marlin all wear Williams FP peeps. A scope on these rifles would make it a god awful thing to carry while dogging. And this is what these guns were built for- heavy brush stomping with your hand wrapped around the receiver for dear life. I am blessed with good eyesight and I can still use the old irons. I hope the day never comes when I have to scope my lever guns. Take the screw out aperture and throw it away and use the hole in the sight frame, with a Williams fire sight front bead you can hunt as late as the law will allow.I have the following peep sighted: Marlin 375 Marlin .35REM Marlin 94 .44 mag Win 94 .30-30 Win 94 .32 sp Win 94 .38-55 Win mod 1886 SRC .45-70 Savage 99 EG .300 Sav Savage 99H carbine .303 Savage, geez I just realized I have alot of money tied up in Williams sights. The money tied up in the lever guns is an investment. (that's what I tell my wife) All the best in 2006 men, Cheers Darryl