Arasaka Stingray II

Arasaka developed and marketed their own 2nd-gen speargun, namely the Stingray It. Bearing some similarity to H&Ks old P-11, the Stingray II uses a helical-barrel array, and a breech loading pepperbox chassis. It's gained tremendous favor with sporters, reef divers, and civilian divers (and SEALS too ... shhhh!).

Reference

 * Firestorm Stormfront (pg. 34)