Caliber Conversion Kits

Caliber Conversion Kits

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    New - H&K HK UMP .45 Conversion Kit - HKP-20623 HK UMP .45 Conversion Kit
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    HK UMP .45 Conversion Kit

    Now: $989.96
    Was: $1,099.95
    H&K HK UMP .45 Conversion Kit This kit optimizes the UMP platform by allowing the user swap between calibers in approximately 5 minutes. The Michael's machine semi-auto bolt pairs perfectly with the...
    HKP-20623
    Now: $989.96
    Was: $1,099.95
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  • New - MM HK UMP 9mm Conversion Kit - 16 inch Barrel - HKP-02284 HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine
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    HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine

    Michaels Machines

    $889.95
    HK UMP 9mm Conversion Kit - US-Made UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion...
    HKP-02284
    $889.95
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    New - HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug - HKP-02285 HK UMP, USC Kit - Caliber Conversion - 9mm - 30 Round
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    HK UMP, USC Kit - Caliber Conversion - 9mm - 30 Round

    HKP HK Parts

    $999.95
    HK Parts and Heckler and Koch HK UMP and HK USC 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug This UMP, USC conversion kit will convert existing conversions to 9mm. This is a simple drop-in...
    HKP-02285
    $999.95
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