Diana 34 EMS Break Barrel Air Rifle, Synthetic Single-shot Spring-piston power plant, convertible to N-TEC gas piston Break barrel action Thumbhole synthetic stock 11mm dovetail optics mount Fiber optic front sight Micrometer adjustable rear sight Two-stage, T06 adjustable trigger Max. velocity with Alloy: 1050 FPS (.177), 950 FPS (.22) Max. velocity with Lead: 900 FPS (.177), 800 FPS (.22) Removable 1/2" UNF threaded barrel Changeable front and rear sights Adjustable barrel alignment Overall length: 46.3" Weight: 7.85 lbs.