Telescoped rounds feature a bullet completely encased in a polymer shell, like a shotgun, with gunpowder surrounding the bullet in the shell. The result is a cartridge that doesn't use brass, a considerable savings in weight.

How do Caseless rounds work?

Caseless ammunition is an attempt to reduce the weight and cost of ammunition by dispensing with the case, which is typically precision made of brass or steel, as well as to simplify the operation of repeating guns by eliminating the need to extract and eject the empty case after firing.

How does CT ammo work?

Textron Systems' CT ammunition uses a novel ammunition design, in which the projectile is seated within a cylindrical case. The CT design allows for up to 37% weight savings, compared to equivalent-performing brass cartridges.