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40 cal slide swap

  1. MP Compact Pistols
    Hello everyone, i am new to this but i've been doing some research of my own and calling around to local gunsmiths in my area and so far a few said it was possible to interchange my slide on my m&p 9c to a complete 40c upper slide asm on my 9c frame. From my understanding is that the 9c and 40c...
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