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4 barrel speargun....

Discussion in 'Underwater Hunting' started by tech_diver, Jan 31, 2020.

  1. tech_diver

    tech_diver Dive Equipment Manufacturer

    Never seen one of these before.....

    АлександрД likes this.
  2. Popgun Pete

    Popgun Pete Barracuda

    # of Dives: 500 - 999
    Location: Melbourne, Victoria, AUSTRALIA
    From the late sixties made by Tapmatic Corporation. There were single, double and quad barrel versions and a longer twin barrel Magnum version of the Johnson Submarine Gun (SMG). These guns use Ramset .22 ammo in a special plastic sleeve that waterproofs the cartridge and has a tip socket that holds onto the spear tail once it is inserted down the muzzle. The breech revolves open to extract the spent cartridge and insert a fresh one. Rather noisy and you are limited by the number of cartridges that you are carrying and the ones you happen to drop while reloading. A powerful shot, but such guns have been banned in many countries. The production went to New Zealand when another company purchased the design along with remaining stock of components.

    A metal clip stored spare ammo on the top rear of the gun, you can see it in the patent drawing.

    SMG TWO BARREL .22 cartridge speargun.jpg
    Johnson SMG patent.jpg
    couv likes this.
  3. Popgun Pete

    Popgun Pete Barracuda

    # of Dives: 500 - 999
    Location: Melbourne, Victoria, AUSTRALIA
    The ammo came in different grades that were color coded, purple was the most powerful with yellow and green at the lower end. For the longer barrel Magnum versions there were even more powerful loads (see article below).
    SMG brochure.jpg
    Johnoly and couv like this.

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