A shock absorber system in crossbows or pneumatic- and gas-pressured guns, said crossbow or gun comprising - a stock, - aiming means and - a gun pipe comprising a splice, said shock absorber system - preventing the aiming means and their parts from being damaged by absorbing the effects such as backfire, bang, concussion etc. resulting from the conversion of static energy into kinetic energy at the gunshot moment and - extending the shooting life span of the gun said shock absorber system comprising: a hollow cylindrical stock binding box having: i) a first through hole along the longitudinal axis of the cylindrical stock binding box and ii) a first transversal fixing screw through hole; a cylindrical shock absorber member made of a soft and elastic material and having: i) a second through hole along the longitudinal axis of the cylindrical shock absorber member and ii) a second transversal fixing screw through hole; a cylindrical stock binding bush having: i) two opposing tapped blind holes along the longitudinal axis of the cylindrical stock binding bush and ii) a transversal fixing screw socket; a fixing screw; a gun halter; a shock absorber capped bush;a shock absorber rondel; and a cylindrical bush wherein said stock binding box is stabilized by welding it to the splice of the gun pipe, said cylindrical shock absorber member is received in said first through hole of said hollow cylindrical stock binding box, said cylindrical stock binding bush is received in the through hole of the cylindrical shock absorber member, said cylindrical stock binding bush is bound to the stock by means of said two opposing tapped blind holes, and said hollow cylindrical stock binding box, said cylindrical shock absorber member and said cylindrical stock binding bush being fixed together by the fixing screw, wherein the fixing screw: i) passes through said first transversal fixing screw through hole of said stock binding box, ii) passes through said second transversal fixing screw through hole of said cylindrical shock absorber member and iii) acts on the bottom of said transversal fixing screw socket of said cylindrical stock binding bush. - a stock, - aiming means and - a gun pipe comprising a splice, - preventing the aiming means and their parts from being damaged by absorbing the effects such as backfire, bang, concussion etc. resulting from the conversion of static energy into kinetic energy at the gunshot moment and - extending the shooting life span of the gun a hollow cylindrical stock binding box having: i) a first through hole along the longitudinal axis of the cylindrical stock binding box and ii) a first transversal fixing screw through hole; i) a first through hole along the longitudinal axis of the cylindrical stock binding box and ii) a first transversal fixing screw through hole; a cylindrical shock absorber member made of a soft and elastic material and having: i) a second through hole along the longitudinal axis of the cylindrical shock absorber member and ii) a second transversal fixing screw through hole; i) a second through hole along the longitudinal axis of the cylindrical shock absorber member and ii) a second transversal fixing screw through hole; a cylindrical stock binding bush having: i) two opposing tapped blind holes along the longitudinal axis of the cylindrical stock binding bush and ii) a transversal fixing screw socket; i) two opposing tapped blind holes along the longitudinal axis of the cylindrical stock binding bush and ii) a transversal fixing screw socket; a fixing screw; a gun halter; a shock absorber capped bush;a shock absorber rondel; and a cylindrical bush wherein said stock binding box is stabilized by welding it to the splice of the gun pipe, said cylindrical shock absorber member is received in said first through hole of said hollow cylindrical stock binding box, said cylindrical stock binding bush is received in the through hole of the cylindrical shock absorber member, said cylindrical stock binding bush is bound to the stock by means of said two opposing tapped blind holes, and said hollow cylindrical stock binding box, said cylindrical shock absorber member and said cylindrical stock binding bush being fixed together by the fixing screw, wherein the fixing screw: i) passes through said first transversal fixing screw through hole of said stock binding box, ii) passes through said second transversal fixing screw through hole of said cylindrical shock absorber member and iii) acts on the bottom of said transversal fixing screw socket of said cylindrical stock binding bush. i) passes through said first transversal fixing screw through hole of said stock binding box, ii) passes through said second transversal fixing screw through hole of said cylindrical shock absorber member and iii) acts on the bottom of said transversal fixing screw socket of said cylindrical stock binding bush.