Abstract: A gunsight comprises a unitary frame (2) for securing to a gun. The frame (2) has a ring (20) with a lens (22) at its front end. A light source (36) is secured to the frame rear end to project a light spot onto the lens (22). The lens (22) and the light source (36) may be independently adjustable in the vertical and horizontal planes, respectively. Alternatively, where the light source (36) is fixed the lens (22) may be adjusted in the vertical and horizontal planes. The light source (36) and the lens (22) are positioned relative to each other and to the gun barrel axis such that the light spot projected onto the lens (22) is reflected to a shooter's eye who then lines up the light spot onto a target to take aim.

Abstract: A gunsight comprises a unitary frame for securing to a gun. The frame has a ring with a lens at its front end. A light source is secured to the frame rear end to project a light spot onto the lens. The lens and the light source may be independently adjustable in the vertical and horizontal planes, respectively. Alternatively, where the light source is fixed, the lens may be adjusted in the vertical and horizontal planes. The light source and the lens are positioned relative to each other and to the gun barrel axis such that the light spot projected onto the lens is reflected to a shooter's eye who then lines up the light spot onto a target to take aim.

Abstract: A container system which can provide for a wide variety of explosive charge configurations, including a suspended spherical or elliptical charge, using a container system which provides minimum interference with the action of the explosive agent while allowing the use of inexpensive liquid or pourable explosive agents. An important property of the invention is that of introducing a minimum of contamination into the blast field created by the detonation of the explosive agent. Therefor it is an objective of the invention to impose a minimum of non-explosive mass of the container system upon the overall mass of the system and its explosive agents.

Abstract: A matched expansion muzzle brake aligned with the forward end of a firearm barrel and bore including a tube having a through bore equal to and coincident with the barrel bore; outwardly diverging gas port means opening into said through bore; the gas port means including narrow throat means adjacent the opening into the through bore; and the narrow throat means having a cross-sectional area substantially equal to the cross-sectional area of the through bore.