lso known as the "American Classic") is a single-shot, bolt-action, pneumatic .177 caliber pellet gun, featuring a rifled steel barrel and imitation wood checkered plastic grips. The 1377 was introduced in 1977, Atypically for modern pneumatic air pistols (which are mostly charged with a single action of a lever-action pump), the 1377 can be pumped to various levels; Crosman recommends at least three pumps to ensure that the pellet clears the barrel, but as many as ten pumps are advised by the manual. Crosman claims a pellet velocity of up to 600 ft/s (180 m/s) from a gun pumped ten times, which is higher than that achieved by most pellet pistols of any kind The gun is noted for being highly modifiable: a cottage industry has formed to provide its enthusiasts with parts and accessories. Examples of common modifications are custom grips and forearms to replace the factory plastic parts, custom triggers for lighter and smoother trigger pull force, custom breeches, bolts and sights, and special piston assemblies to increase pellet velo Specifications: Weight: 2 LB. Cardridge: pellet. Calibre:177 Single shot. Sights:open Muzzle velocity: up to 600 feeth per second 180m/s Review