The Swedish Model 45B — by Henrik Jansson
The gun [Model 45] was upgraded to the model “45B” some years after introduction. A flaw in the design had been revealed as the end cap could potentially shake loose during use. If that happened, there was a real risk that the end cap, bolt and spring could slam into the shooter’s face when firing, and a “hook” was added on the end piece to prevent this from happening. Finally, the vent holes in the barrel shroud were made smaller and a new green finish was introduced, and what was probably the best submachine gun of the Cold War era was born.
A set of night sights hooked onto the existing sights and consisted of three illuminated dots, providing a reasonable chance of hitting a target in the dark. A brass catcher cloth bag was attached to the gun to collect the spent brass for reloading, but also to prevent damage to the shooter if a cartridge detonated out of battery.
The m/45B was also altered by the SEALs to a silenced version with a long, smooth barrel jacket. Fired with subsonic ammunition, it produced a very low report. This alteration was never made in Sweden.
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