Abstract: An improved muzzle brake, attached to the end of a rifle barrel reducing the recoil of the rifle includes an internally threaded attaching end, engaging outer threads of a rifle barrel, a flattened projectile end, with an overall increasing taper from the attaching end to the projectile end, a flat upper surface which does not impede the sight line of the rifle, a flat lower surface, and two lateral surfaces including a first lateral oval vent, a second lateral oval vent and a third lateral oval vent, the first lateral vent defining a first flat brake plate having a first central bore, the second lateral oval vent defining a second flat brake plate having a second central bore and the third lateral oval vent defining a third flat brake plate having a third central bore penetrating through the projectile end, wherein a bullet fired from the rifle travels through the attaching end, the first central bore, second central bore and third central bore, while the gasses generated by the fired projectile are deflecte

Abstract: A fastening device for attaching an aiming telescope (1) on a weapon using a mounting rail (2) connected to a telescope housing and extending along the telescope, the mounting rail being supported on at least one mounting apparatus (3a, 3b) fastened to the weapon. The mounting rail is provided with a longitudinal groove (5) and a clamping part (7) corresponding to an inside profile of the longitudinal groove (5) is inserted into the groove and fixed with an attaching screw (8) that engages threads (9) in the clamping part (7). The attaching screw (8) is passed through an opening (11a, 11b) in the mounting apparatus (3a, 3b). The mounting rail (2) is provided on the side facing the mounting apparatus (3a, 3b) with a toothing (22) that is engaged by at least one projection (23) protruding from the mounting apparatus.