GMS M100YA10BAR Mortise Lock Cylinder - 5 Pin, Yale Y1 Keyway, Dark Bronze

If you're a locksmith or just doing a door hardware refresh, this is a solid, brand new mortise cylinder.

It's made by GMS, model M100YA10BAR.

It's a 5-pin cylinder with a standard Yale Y1 keyway, which is pretty common and easy to get keys cut for.

The finish is a nice dark bronze, so it'll look good on a lot of different doors.

It's a straight-up replacement part, no frills, just good quality.

If you need to rekey or replace a worn-out cylinder, this is the one to grab.