25 Caliber: Low Power= 550 fps, High=800 fps. Youtube close up of Aspen. Youtube video of product testing. Note: Video incorrectly shows pcp fill probe insert location near end of barrel. It is actually under pump handle.This listing will include a high quality 4x32EG illuminated scope with red/green/or no illumination and 11mm Dove tail rings needed to mount to the rifle. By purchasing you are agree that you know the laws in you area about owning and shooting air guns. This item is in the category "Sporting Goods\Outdoor Sports\Air Guns & Slingshots\Air Rifles". The seller is "survivalpcp" and is located in this country: US. This item can be shipped to United States.