UMP / USC Series

UMP / USC Series

Choose from an expansive selection of HK UMP and USC parts, such as HK UMP Barrels and HK USC Stocks, crafted for those who value reliability and performance. Upgrade with HK USC Handguards and HK UMP Triggers, and experience the difference in quality and craftsmanship.

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  • Out Of Stock
    New - Trijicon RMR/SRO 45° Rail Offset Adapter - HKP-20336 RMR,SRO Adapter - 45° - Rail Offset

    RMR,SRO Adapter - 45° - Rail Offset

    USA

    $91.45
    Trijicon RMR/SRO 45° Rail Offset Adapter Perfect for that situation where you need the versatility of a magnified optic paired with a Trijicon RMR or SRO red dot sight in close quarters. This offset rail adapter attaches to the firearm's picatinny...
    HKP-20336
    $91.45
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  • On Sale
    New - Wasatch Arms Key Mount Tool - HKP-20299 Key Mount Tool - Crows Foot Wrench for Dead Air Suppressors
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    Key Mount Tool - Crows Foot Wrench for Dead Air Suppressors

    Wasatch Arms

    Now: $29.95
    Was: $54.95
    Wasatch Arms Key Mount Tool   The Dead Air Crows Foot Wrench engages directly on the Key Mount brake allowing proper axial torque for quick and easy installation.  Made in the USA and finished in black nitride.
    HKP-20299
    Now: $29.95
    Was: $54.95
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  • Out Of Stock
    New - HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B - Push Pin - HKP-16339 HK UMP, USC Stock Block B - Push Pin

    HK UMP, USC Stock Block B - Push Pin

    HDPS

    $39.95
    HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B - Push Pin This sling pin will replace the current production stock Block B hardware and upgrade to the Sling Pin Pull Style version.
    HKP-16339
    $39.95
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  • New - MM HK UMP/USC (9mm) Semi Auto Bolt Carrier - HKP-02283 HK USC, USC Bolt Carrier - Semi Auto - 9mm
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    HK USC, USC Bolt Carrier - Semi Auto - 9mm

    Michaels Machines

    $699.95
    HK UMP/USC (9mm) Semi Auto Bolt Carrier The semi-auto bolt group is needed for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles.  Specifications: Tungsten Filled Heat Treated Parkerized &...
    HKP-02283
    $699.95
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  • Out Of Stock
    New - MM HK UMP (9mm) Full Auto Bolt - HKP-02288 MM HK UMP (9mm) Full Auto Bolt

    MM HK UMP (9mm) Full Auto Bolt

    Michaels Machines

    $699.95
    HK UMP 9mm - Full Auto Bolt - Stripped The full auto bolt carrier is for HK UMP rifles. The full-auto bolt carrier will not work in the HK USC conversion rifles. One of the finest aftermarket carriers you can buy. Features: Tungsten filled Heat...
    HKP-02288
    $699.95
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  • On Sale
    New - Raddlock Key - HK Series - HKP-02447
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    Raddlock Key - HK Series

    Raddlock

    Now: $4.95
    Was: $9.95
    HK Series Raddlock Key And Lanyard Raddlock kits convert your firearm to a non-detachable magazine configuration for states with removable magazine restrictions. This is a replacement key for firearms equipped with a Raddlock device. Compatible With the...
    HKP-02447
    Now: $4.95
    Was: $9.95
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  • New - B&T Unigrip Fixed With Storage Compartment - FDE - HKP-18042
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    B&T Unigrip Fixed With Storage Compartment - FDE

    B&T Brugger & Thomet

    $69.95
    B&T Vertical Grip - Fixed Style With Storage Compartment - TAN Swiss made B&T vertical for-end grip for picatinny. Made of tan polymer and includes a water tight storage compartment in the bottom of the grip. Will fit all mil-spec picatinny rails...
    HKP-18042
    $69.95
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  • HK UMP Paddle Magazine Release - Extended HK UMP Paddle Magazine Release - Extended
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    HK UMP Paddle Magazine Release - Extended

    HKP HK Parts

    $34.95
    UMP Paddle Magazine Release - Extended Billeted alloy UMP magazine release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release you get more surface area as well as a much...
    HKP-17919
    $34.95
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  • New - HK UMP 9mm Barrel - Threaded - 3-Lug - HKP-02278 HK UMP Barrel - 9mm - Threaded with 3 Lug
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    HK UMP Barrel - 9mm - Threaded with 3 Lug

    Michaels Machines

    $549.95
    HK UMP 9mm Barrel - Threaded - 3-Lug Specifications: 3Lug Threaded Compatible With: UMP 9mm  
    HKP-02278
    $549.95
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  • Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
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    Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S

    Frost Defense

    $239.95
    Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the...
    HKP-22341-M
    $239.95
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  • New - Magpul UCS - Universal Carbine Stock - HKP-22171-M UCS Universal Carbine Stock - M1913 rail
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    UCS Universal Carbine Stock - M1913 rail

    Magpul

    $209.95
    Magpul UCS Universal Carbine Stock The Magpul UCS (Universal Carbine Stock) is designed to be the ideal lightweight supplement to the vast array of firearms utilizing a vertical M1913 rail on the rear of the receiver for stock fitment. To accommodate the...
    HKP-22171-M
    $209.95
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  • Out Of Stock
    New - B&T Aimpoint ACRO / NANO 39mm QD Mount - HKP-21761 Picatinny Optic Mount - 39mm - Aimpoint ACRO / NANO

    Picatinny Optic Mount - 39mm - Aimpoint ACRO / NANO

    B&T Brugger & Thomet

    $85.00
    B&T Aimpoint ACRO / NANO 39mm QD Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail.  Keep your optic profile compact with this Swiss made mount. Compatible With: Any firearm featuring...
    HKP-21761
    $85.00
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    $85.00
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