Supercavitating small arms ammo.
" Classified as Multi Environment Ammunition – MEA – this projectile is effective against submerged targets and targets in the air. Depending on the weapon and the used loading variant, this ammunition is suitable for use in partial or fully submerged weapons, regardless of if the target is in water or on the surface. Due to the unconventional shape and significant mass, this round oﬀers great armor-piercing capability against Multi-Layer Structures. This shape is also very effective against targets with fiber structure or mud, even when covered by sand. This projectile may be offered in two loading variants, A2 and X2, where both enable swimming capabilities. A2 load is the most powerful when engaging targets in air or water, but can only be shot from the air. Suitable for patrol boats, machine guns, coastal guards, and dedicated marksmen that would engage Multi-environment threats. X2 load is designed for combat swimmers and SOF personnel who operates submerged. "