Lightweight and designed for rugged hunting use. Dependable, accurate. Positive locks. Clear unobstructed vision. No knobs or side plates to blot out shooter's field-of-vision. Detachable upper staff. Set screw is provided as a stop screw so that sight will return to absolute zero. High-grade alloy construction. Deep blue-black. Standard thread sizes permit the use of wide range of apertures. Twilight apertures interchangeable.

Designed to install by using the two rear scope mounting holes in newer model Marlin centerfire lever action receivers
Includes two screws
Marlin 1894 requires a hammer extension