The Crosman 1008 RepeatAir is a .177 caliber, C02, semi-auto, single / double action air pistol with 8 shot rotary magazine, non blowback They’re a replica of the Smith & Wesson semi auto pistol, and were manufactured from 1991 to 1997. This pistol after resealing it this week, 
chrono at 424fps averaged. it is pretty accurate at 25ft. Shoots better than I can I'm sure. Has a adjustable sight for windage and elevation. A fun gun from the past. A video will be coming soon.