The present disclosure is directed to mobile correctional facility robots and systems and methods for coordinating mobile correctional facility robots to perform various tasks in a correctional facility. The mobile correctional facility robots can be used to perform many of the tasks traditionally assigned to correctional facility guards to help reduce the number of guards needed in any given correctional facility. When cooperation is employed among multiple mobile correctional facility robots to execute tasks, a central controller can be used to coordinate the efforts of the multiple robots to improve the performance of the overall system of robots as compared to the performance of the robots when working in uncoordinated effort to execute the tasks.

A toy dart includes a deformable cap that safely impacts a target. The cap includes two layers of openings that provide spaces that allow the cap to deform. The lower layer, having two openings, is supported by exterior posts and an interior wall between the two openings. The upper layer, having two openings, is supported by exterior posts and an interior wall that is laterally offset from the interior wall of the lower layer. The upper and lower layers are separated vertically by a substantially flat divider. The upper layer is more rigid than the lower layer such that the lower layer of the cap deforms more than the upper layer of the cap upon initial impact with the target.

Provided are methods and related devices for disrupting an explosive device using a propellant driven disrupter (PDD) that propels a rounded projectile (RP) toward an explosive device. The RP travels along a linear trajectory and impacts the target, including a barrier portion of the explosive device. The impacting between the RP and barrier forms a composite projectile via a solid state weld between a portion of the barrier and the RP distal end, thereby minimizing or avoiding spall and fragment generation into the explosive device. The projectile traverses a penetration distance along the linear trajectory, or a defined-angle relative thereto, to disrupt the explosive device without unwanted explosive detonation.

The present disclosure is directed to mobile correctional facility robots and systems and methods for coordinating mobile correctional facility robots to perform various tasks in a correctional facility. The mobile correctional facility robots can be used to perform many of the tasks traditionally assigned to correctional facility guards to help reduce the number of guards needed in any given correctional facility. When cooperation is employed among multiple mobile correctional facility robots to execute tasks, a central controller can be used to coordinate the efforts of the multiple robots to improve the performance of the overall system of robots as compared to the performance of the robots when working in uncoordinated effort to execute the tasks.

Disclosed are a projectile and a method of its manufacture for the field of investigating the strength properties of a solid material by application of a mechanical force and more particularly for bird strike tests consisting of a gel including glycerol. A projectile 1 according to the invention may have a central portion 4 of cylindrical shape including a substantially hemispherical portion 2, 3 at each of the ends thereof.

The invention relates to bullets having increased frangibility (or which can be easily fragmented) and to powder materials and processes for the manufacture of such bullets. The bullets of the present invention are made from an iron alloy containing 75-81% Hoeganaes MH-100 Iron 0.6-0.09% Carbon, and balance of admixed Copper powder. Said bullets are then coated for lubricity so the bullet does not prematurely wear the barrel of a gun. Additionally, the invention provides a simple low cost process to make bullets that is amenable to mass production via automation.

A propellant driven disrupter (PDD) for disrupting an explosive target, comprising: a disrupter barrel having a breech and muzzle end; a projectile liquid or gas positioned in the barrel and extending a longitudinal distance in the disrupter barrel. The projectile liquid distal end is located farthest from the disrupter barrel breech end. A jet stabilizing projectile (JSP) is at least partially positioned in the barrel and operably contacts the projectile liquid distal end. The JSP has a JSP proximal end facing toward the disrupter barrel breech end and a distal end opposed to the JSP proximal end, wherein some or all of the JSP is positioned in the barrel. The PDD may contain the JSP, with an air region between the JSP distal end and the muzzle end, or an air region in an adapter that is connected to the muzzle end. Also provided are JSP's having improved flight stability for use with liquid or air-filled disrupters and methods of disrupting a target.

The present invention provides a method of making a subsonic ammunition cartridge having a polymeric casing body having a generally cylindrical hollow polymer body having a body base at a first end thereof and a mouth at a second end to define a propellant chamber; a propellant insert positioned in the propellant chamber to reduce the internal volume of the propellant chamber, wherein the propellant chamber has an internal volume that is at least 10% less than the open internal volume of a standard casing of equivalent caliber; and a primer insert positioned in the body base and in communication with the propellant chamber.

This invention relates to a non-lethal projectile to be fired using a paintball gun, and more particularly, but not exclusively, to an aerodynamic non-lethal projectile which is used for marking, inhibiting or administering medicinal or other chemical substances to live targets. According to a first aspect of the invention, there is provided a projectile comprising a body shaped to receive a capsule containing a substance, the body having a stabilizing member connected thereto for stabilizing the projectile in flight when the projectile is discharged from a weapon, and an annular member connected to the stabilising member at a rear end of the projectile for positioning the projectile relative to the weapon and relative to other projectiles to be discharged by the weapon.

A sub-mass projectile for a firearm includes a core having a relatively lower mass than a standard projectile for the firearm. A force inducer is associated with the core. The force inducer has an interface that interacts with the firearm. The interface includes a bearing surface with a relatively larger outer diameter than a standard projectile for the firearm. The bearing surface bears against a surface of the firearm during operation so as to increase resistive forces between the sub-mass projectile and the firearm to a magnitude sufficient to approximate the kinetic forces of a standard mass projectile on the firearm during operation.