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  • Sig Sauer® P320 Lower Parts Kit - 9mm/.40/.357

    Sig Sauer® P320™ Lower Parts Kit - 9mm/.40/.357

    If you're working on a Sig Sauer® P320 compatible 80% build, you're gonna need a lower parts kit to get your MUP-1 working. That's the part legally considered the firearm, and it's also the part all your frames, slides, etc., house to convert your...

  • 80% P320 Compatible Insert 80% P320 Compatible Insert 2 80% P320 Compatible Insert 3 80% P320 Compatible Insert 4

    80% P320 Compatible Insert

    With the introduction of the P320 by Sig Sauer® into the gun industry came the idea that you could have one pistol that could be adaptable to any carry situation. This was cleverly done by defining the insert or the "guts" of the P320 as the legal...

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