A reflective gun sight includes a rear sight including a light source; and a front sight including a reflective surface that is directly opposing the light source and recessed within an aperture of a front sight housing, wherein light emitted from the light source travels through the aperture and is reflected by the reflective surface toward the rear sight.

A reflective gun sight includes a rear sight including a light source; and a front sight including a reflective surface that is directly opposing the light source and recessed within an aperture of a front sight housing, wherein light emitted from the light source travels through the aperture and is reflected by the reflective surface toward the rear sight.

A grenade launcher system comprises a grenade launcher receiver and a grenade launcher barrel attached to the grenade launcher receiver. A trigger assembly is attached to the grenade launcher receiver at a position adjacent the grenade launcher barrel. The grenade launcher receiver has an elongate channel disposed on an upper surface of the grenade launcher receiver, the elongate channel extending parallel to the grenade launcher barrel and configured to slidably and removably receive a mounting rail. In certain embodiments, the grenade launcher system is configured to operate in an underslung configuration relative to a firearm. In certain embodiments, the grenade launcher system is configured to operate in a standalone configuration without a firearm.

An assembly comprising a firearm slide and an adaptor plate configured to mate with the firearm slide. The adapter plate includes a first seat in a top surface of the adaptor plate and a second seat in the top surface of the adaptor plate. The assembly also includes a first iron sight configured to mate with the first seat and a second iron sight configured to mate with the second seat.

An assembly comprising a firearm slide and an adaptor plate configured to mate with the firearm slide. The adapter plate includes a first seat in a top surface of the adaptor plate and a second seat in the top surface of the adaptor plate. The assembly also includes a first iron sight configured to mate with the first seat and a second iron sight configured to mate with the second seat.

A sighting apparatus for a firearm includes a front sight affixed to an upper surface at a front end of the firearm, and a rear sight affixed to the upper surface at an opposing rear end of the firearm. The rear sight includes a main body and an indexing element positioned thereon. The indexing element has its terminus aligned with the top surface of the rear sight body. The front sight is positioned higher than the rear sight, such that aiming the firearm involves pointing the front sight at the target, then aligning the bottom of the front site with the upper terminus of the indexing element on the rear sight. In one embodiment of the invention, the rear sight has a low-profile that enables the user to regain significant field of view that was blocked by prior art rear sights.

A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas.

A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas.

In one aspect, a gun sight may include a main body and a light tube. In one embodiment, the main body may include an elongated light tunnel housing and a base, wherein the light tunnel housing is formed on top of the base, and a light tunnel is formed inside the light tunnel housing. The light tunnel has a front end and a rear end, and the light tube is disposed at the rear end. In one embodiment, the light tube can be a fluorescent optical fiber that can be used as a light source for the shooter's eye even when the environment is relatively dark. In other embodiments, the light tube can be an integration of optical fiber and tritium. The light tunnel is tapered from the front end to the rear end to enhances the effect of light concentration in the light tunnel.

In one aspect, a gun sight may include a main body and a light tube. In one embodiment, the main body may include an elongated light tunnel housing and a base, wherein the light tunnel housing is formed on top of the base, and a light tunnel is formed inside the light tunnel housing. The light tunnel has a front end and a rear end, and the light tube is disposed at the rear end. In one embodiment, the light tube can be a fluorescent optical fiber that can be used as a light source for the shooter's eye even when the environment is relatively dark. In other embodiments, the light tube can be an integration of optical fiber and tritium. The light tunnel is tapered from the front end to the rear end to enhances the effect of light concentration in the light tunnel.