Abstract: A fastener for securing a panel to a substructure includes a flange having a bore, a base disposed under the flange and having a post extending upwardly from the base, the post having a retaining member at an upper portion thereof, and at least one flexible hinge resiliently connecting the base and the flange such that when the base is pushed toward the flange, the post with the retaining member passes through the bore adapted to engage with other member. The flange further includes flexible walls formed around the bore and extending outward with retaining clips formed at respective leading ends thereof. The flexible walls bend towards the bore when pressed into the bore.

Abstract: A system and method for mounting large caliber guns with a laser emitter is disclosed. The laser emitter mounting system includes an elongated tubular member for insertion into a gun chamber. The elongated tubular member is compressively secured within the gun bore. A mounting surface for a laser emitter and a breech assembly detachably engaged with the elongated tubular member by an anti-roll plate.

Abstract: A system and method for mounting large caliber guns with a laser emitter is disclosed. The laser emitter mounting system includes an elongated tubular member for insertion into a gun chamber. The elongated tubular member is compressively secured within the gun bore. A mounting surface for a laser emitter and a breech assembly detachably engaged with the elongated tubular member by an anti-roll plate.

Abstract: A sub-caliber in-bore device placed within a launching structure of a larger caliber weapon system used to simulate the firing and ballistic trajectory of a larger and relatively more expensive weapons round. The said device essentially comprises a smaller caliber weapon subsystem with recoil suppression mounting subsystem, traverse and elevation adjustment subsystem, firing circuit delay timer, and an electrical connection subassembly to allow communications with the launching system. This invention provides an accurate, realistic, and cost-effective training experience to the operator.