Patent ID: 8474380

Claim:
A caseless projectile for firing out of a barrel of a small arms weapon, the barrel being made of a barrel material and having an inner diameter, the projectile comprising: a substantially cylindrical body with first and second axially opposite ends and a cavity extending between the first end and the second end for holding a quantity of propellant, the first end being closed by a nose fixed to the body, the cylindrical body having a first outer diameter which is less than the inner diameter of the barrel; a quantity of propellant held in the cavity; at least two sets of seals, each set of seals having a plurality of closely spaced seals extending about an outer circumferential surface of the body; a primer for igniting the propellant, the primer being supported by the cylindrical body and located inboard of the second end of the cylindrical body; each seal being in the configuration of a ring and protruding radially from the body to form a substantial seal against an inner circumferential surface of the barrel and having an outer diameter greater than the first outer diameter and equal to or greater than the inner diameter of the barrel; wherein a first set of the seals is disposed near the first end of the cylindrical body and a second set of seals is disposed near the second end of the cylindrical body, the first and second sets of seals being spaced apart along the cylindrical body with a portion of the cylindrical body between the seals being exposed.