Stoeger’s commitment to excellence has led them to create S4000-E, a powerful, quick-shooting, and silent air rifle with a wide range of customization options to choose from. The heart of the S4000-E is its break action gas ramp system. This unconventional system uses compressed gas to cock the firing mechanism instead of the metal spring found on many other break action air guns. This gas ramp cocking system helps reduce the overall weight and fires alloy pellets at velocities up to 1200 feet per second, rivaling that of a .22 long rifle. The S4000-E also utilizes an S3 integral suppressor, giving the rifle a whisper-quiet report and can provide additional grip while cocking. Features of the Stoeger S4000-EPowerful gas ramp cocking mechanismAvailable in .177 and .22 caliber S3 integral suppressor Stoeger S4000-E .177 Cal/1200 FPS Adv. Ergo. Realtree Edge Synthetic Stock, Fiber-Optic Sights, 4x32 Scope 30401