Abstract: The mounting device includes keys or pressing element, a movable fastener, a positioning bar and elastic elements, which are assembled in a receiving room of a base. The base is formed with an island type engagement portion having a shape corresponding to a slot of an M-LOK rail. The keys or pressing element is transversely movable in the receiving room. The movable fastener is longitudinally movable in the receiving room and has a latch bar projecting to a bottom of the island type engagement portion. The keys or pressing element and the movable fastener are provided with a driving slant and a driven slant, respectively. A slidable planar contact is formed between the driving slant and the driven slant by means of both the driven slant being shifted by pushing the driving slant and elasticity of the elastic elements. Pressing the keys or pressing element drives the latch bar to make a longitudinally to-and-fro shift.

Abstract: A KeyMod handguard quick release structure is mainly used in rifle gun, including a base body for mounting gun accessories, operation elements, first spring element fixed to each operation element, a positioning element and a second spring element installed between the positioning element and base body, where the seat body has an accommodation space and through hole, the operation elements respectively have a guide portion, and the positioning element is passed through the through-hole. When the base body is to be installed on the KeyMod handguard, an engagement member is placed in a large engagement hole, and the base body is then pressed down, the positioning element being moved upward immediately.

Abstract: A pistol laser sight mounting device comprises a base, a base cover, an L-shaped rod, and a receiving member. The base is provided with a retaining slot for disposing a pistol trigger guard, and with a first fastening portion. The basic cover is fastened with the base such that the retaining slot is sealed off by the base cover. The L-shaped rod has a fixed arm and a suspension arm. The fixed arm is provided with a second fastening portion which is fastened with the first fastening portion of the base. The receiving member is provided with two arm portions and a receiving through hole for holding the piston laser sight. The receiving member is fastened with the L-shaped rod by the two arm portions which are fastened with the suspension arm of the L-shaped rod.

Abstract: A pistol laser sight mounting device comprises a base, a base cover, an L-shaped rod, and a receiving member. The base is provided with a retaining slot for disposing a pistol trigger guard, and with a first fastening portion having an arcuate surface. The base cover is fastened with the base such that the retaining slot is sealed off by the base cover. The L-shaped rod has a fixed arm and a suspension arm. The fixed arm is provided with a second fastening portion which is fastened with the first fastening portion of the base. The receiving member is provided with two arm portions and a receiving through hole for holding the pistol laser sight. The receiving member is fastened with the L-shaped rod by the two arm portions which are fastened with the suspension arm of the L-shaped rod.