TACTICAL ATTITUDE: The light and ergonomic XP4 pistol use recoilless, single-shot precompressed technology (NOT CO2 cartridges) for comfort and accuracy. With a double-stage trigger, automatic safety, precision sights, and integral slide and underneath rails.FUNCTIONALITY AT ITS BEST: The new, patented Stoeger S3 integrated sound moderator combines the functionality of internal air-regulating baffles with a newly developed decompression chamber, significantly reducing noise - allowing for easy operation of the powerful Gas Ram System break-barrel action.FIRST IN THE WORLD: The S3 is the first system of its kind to feature interchangeable front fiber-optic sights, enabling the perfect combination of functionality and technology.SECURE YOUR GRIP: Our exclusive ProAdaptive Checkering allows for a comfortable and secure fit in any weather condition or shooting position. Located on the butt pad, stock, pistol grip, safety, forearm, and barrel grip.5 YEAR LIMITED WARRANTY: Your new airgun is warranted for 5 years from the date of purchase against any defect in materials or workmanship in the metal parts of your product.