This is the genuine Crosman steel breech upgrade kit, Model 2240 SBPK.
Ideal for upgrading many .22caliber Crosman air pistols and the 2260 air rifle, this kit provides a stronger breech and bolt assembly that enhances accuracy. It also features 3/8-inch dovetails for ataching a scope or suitable rear sight. The original rear sight supplied with these guns does not fit this breech, but the Archer Airguns Rear Field Sight for Crosman Pistols fits perfectly.
Contains the following parts:
.22 caliber bolt
5/64 hex wrench
.050 hex wrench
Fits many Crosman airguns, including the 1322, 2240, 2250, 2260 and 2289.