A specially manufactured, sandblasted 1" diameter stainless steel is used exclusively during the production of A.B. Biller tubular spearguns. A unique sealplug prevents water from seeping into the gun barrel and is guaranteed to withstand pressure to 200' underwater. One to three nylon guide rings (depending on the length of the speargun) assures accuracy and a quiet projection when the shaft is released. The stainless steel speargun is available with the same standard features as its wooden counterpart, including hardened stainless spring steel shaft; hardened stainless spring steel double barb, rockpoint, swivel tip; two 9/16" gun bands; and the redesigned grip and trigger mechanism.