SM 42: 42″ 45″ SM 36: 36″ 40″ SM 32 ... In the making of A.B. Biller tubular spearguns, specially manufactured, sandblasted 1″ diameter stainless steel is used exclusively. A unique sealplug prevents water seepage into the gun barrel and is guaranteed to withstand pressure to a 200′ depth. One to three Nylon guide rings (depending ...
