flare gun/pistol U.S.A.

Brass flare pistol /gun again from the U.S.A .another big beast takes 11/2 inch flares weighs in at just under 4lb 13 inches overall length barrel 8 1/8 long made of some kind of alloy I think set into brass, body and grip cast in brass, Made by the COLUMBIA APPL. CORP. L.I.C. N.Y. U.S.A. marked MOD-3 no serial number as such but does have at base of grip PT 3_793 this is navy so may have come from PT boat?
Barrel has some paint missing brass has been lacquered all in all very good working order and condition for age.

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