Williams rear sights have a reputation as being top-notch. If your Crosman pistol has the AS2250-013 receiver kit, you can attach this fine site to your air gun. You’ll notice increased accuracy and greater satisfaction once you start using this rear sight.Elevation & windage target turrets

• 3/8″ integral mount
• Positive internal locks
• Fits Crosman air pistol models 1740, 2240 1377 & 1322 that have been modified with the AS2250-013 receiver kit
• Includes a hex wrench