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The PPS-43 is one of the most widely fielded sub-machine guns of the past 50 years. Virtually every Soviet-era Warsaw Pact aligned nation either produced their own version of the PPS-43 or received thousands of them from the Soviet leadership. This policy and the vast numbers of PPS-43's manufactured is why no other sub-machine gun has eclipsed the PPS-43 in numbers or actual battlefield use.
The PPS-43 lower receiver is the main operating assembly for the PPS-43. Consisting of all of the trigger components, the pistol grip, and magazine housing the lower receiver assembly is second only to the actual receiver for importance. The trigger, trigger spring, and sear are all parts that wear with usage making this lower frame an inexpensive way to secure spare parts for your legally registered PPS-43 for years to come. As the assembly is complete, home hobbyist engineers can use the lower receiver assembly for their own unique firearm design as well.