Conversion Kits

Conversion Kits

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  • HKP HK 416C 9" Complete Upper Kit HKP HK 416C 9" Complete Upper Kit

    HKP HK 416C 9" Complete Upper Kit

    HKP HK Parts

    $2,799.95
    HK416C Complete Upper Kit - 9"  After years trying to get these back in. We finally bring you a rare unicorn of a find. With our complete 416c upper kit all that would be needed to complete this kit would be a mil-spec lower or a STS 416c lower...
    HKP-21042
    $2,799.95
    Qty in Cart: 0
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    $2,799.95
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  • B&T APC9/APC45 Stock Conversion Kit B&T APC9/APC45 Stock Conversion Kit

    B&T APC9/APC45 Stock Conversion Kit

    $149.95
    Stock Conversion Kit - APC9/APC45 Converts the Telescopic Brace into a Telescopic Stock.   **B&T Stock Conversion Kit For BT-20522 Telescopic Brace (US Version) - For APC9/APC45
    HKP-19968
    $149.95
    Qty in Cart: 0
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    $149.95
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  • CQT FX Simunition Conversion Kit for MP5 - 9mm - Used CQT FX Simunition Conversion Kit for MP5 - 9mm - Used

    CQT FX Simunition Conversion Kit for MP5 - 9mm - Used

    Simunition

    $99.95
    CQT FX Simunition conversion kit for HK MP5 9mm. Used in good condition. Kits include: barrel insert locking piece barrel muzzle clamp.
    HKP-20648
    $99.95
    Qty in Cart: 0
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    $99.95
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  • HKP HK MR556/416 Upper 8" 416C Style Conversion Kit w/ Handguard HKP HK MR556/416 Upper 8" 416C Style Conversion Kit w/ Handguard

    HKP HK MR556/416 Upper 8" 416C Style Conversion Kit w/ Handguard

    HKP HK Parts

    $1,495.95
    MR556 & HK416 Upper Conversion Kit - 8" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original HK 416C 8" barrel conversion kit for 416 or MR556. Each upgrade kit is as close as you can get to a factory HK...
    HKP-18628
    $1,495.95
    Qty in Cart: 0
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    $1,495.95
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  • Out Of Stock
    H&K 91/G3 (.22LR) Conversion Kit H&K 91/G3 (.22LR) Conversion Kit

    H&K 91/G3 (.22LR) Conversion Kit

    H&K Heckler & Koch

    $0.00
    Used Surplus Genuine German HK G3 .22 caliber conversion kitFits and converts all HK91, G3 rifles to shoot the cheap and readily affordable .22 LR ammunition. Includes bolt group, barrel tube, 1 magazine, and cleaning kit and wooden green case. NO...
    HKP-01147
    $0.00
    Qty in Cart: 0
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    $0.00
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  • Out Of Stock
    HKP G36K Barrel Front End Kit HKP G36K Barrel Front End Kit

    HKP G36K Barrel Front End Kit

    HKP HK Parts

    $749.95
    G36K Barrel Front End Barrel Kit - 223/556 New production HK G36K style barrel conversion and front end kit. Each kit will include the necessary parts to build a G36/SL8 variant into the G36K barrel length variant as pictured. All you need is this kit to...
    HKP-18225
    $749.95
    Qty in Cart: 0
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    $749.95
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  • MM HK UMP (.40 S&W) Conversion Kit MM HK UMP (.40 S&W) Conversion Kit

    MM HK UMP (.40 S&W) Conversion Kit

    Michaels Machines

    $999.95
    HK UMP 40 Caliber Conversion Kit With this UMP Conversion kit, UMP .45 sub guns can be converted to .40 caliber. Machined bolt carriers are available for USC/UMP conversion sub guns. This is a simple drop-in conversion. The time required to change...
    HKP-18754
    $999.95
    Qty in Cart: 0
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    $999.95
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  • MM HK UMP 9mm Conversion Kit MM HK UMP 9mm Conversion Kit

    MM HK UMP 9mm Conversion Kit

    Michaels Machines

    $889.95
    HK UMP, USC 9mm Conversion Kit US Made 9mmUMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with the...
    HKP-02286
    $889.95
    Qty in Cart: 0
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    $889.95
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  • Out Of Stock
    German HK 93, HK 33 Conversion Kit German HK 93, HK 33 Conversion Kit

    German HK 93, HK 33 Conversion Kit

    H&K Heckler & Koch

    $0.00
    German HK 93,33 .22 conversion kit in the wooden case. In overall very good shape. Comes complete with 2 X 20 round mags, wooden German case, bolt group, barrel insert, and the rare instruction sheets are included. A rare find and a must have for the die...
    HKP-17401
    $0.00
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  • H&K HK UMP .45 Conversion Kit H&K HK UMP .45 Conversion Kit

    H&K HK UMP .45 Conversion Kit

    $1,099.95
    HK UMP 45 Caliber 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 TPM and Gideon Shadow receivers as well as USC to...
    HKP-20623
    $1,099.95
    Qty in Cart: 0
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    $1,099.95
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  • Out Of Stock
    H&K HK VP9 to HK VP9 Long Slide Conversion Kit - Black H&K HK VP9 to HK VP9 Long Slide Conversion Kit - Black

    H&K HK VP9 to HK VP9 Long Slide Conversion Kit - Black

    H&K Heckler & Koch

    $0.00
    Features: Slide assembly with rear serrations, charging supports, and forward serrations / lightening cuts O-ring enhanced barrel, optimized and fit for accuracy Complete small parts and fire control including back plate, striker assembly, and drop...
    HKP-19040
    $0.00
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    $0.00
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  • H&K UMP (.40 S&W) Conversion Kit - Used H&K UMP (.40 S&W) Conversion Kit - Used

    H&K UMP (.40 S&W) Conversion Kit - Used

    H&K Heckler & Koch

    $1,087.95
    HK UMP .40 Caliber Conversion Kit This UMP conversion kit provides the necessary components to convert .45 sub-guns to .40 caliber. Machined bolt carriers are available for USC/UMP conversion sub-guns. This is a simple, drop-in conversion requiring a...
    HKP-00729
    $1,087.95
    Qty in Cart: 0
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    $1,087.95
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  • Out Of Stock
    HKP HK 416/MR556 14.5 " Upper Conversion Kit, 14.5" HKP HK 416/MR556 14.5 " Upper Conversion Kit, 14.5"

    HKP HK 416/MR556 14.5 " Upper Conversion Kit, 14.5"

    HKP HK Parts

    $699.95
    MR556 & HK416 Upper Conversion Kit - 14.5"Finally an answer for all of those that have been wanting a 14.5" upper for an HK416 or MR556. This conversion kit adds an upper or a barrel option for your MR556, CR556 & HK 416's. Each upgrade kit is...
    HKP-17877
    $699.95
    Qty in Cart: 0
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    $699.95
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  • Out Of Stock
    HKP HK MR556/416 9" HK416C Style Barrel Upper Conversion Kit HKP HK MR556/416 9" HK416C Style Barrel Upper Conversion Kit

    HKP HK MR556/416 9" HK416C Style Barrel Upper Conversion Kit

    HKP HK Parts

    $0.00
    MR556 & HK416 Upper Conversion Kit - 9" - HK 416C StyleFinally an answer for all of those that have been wanting as close to the origional, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...
    HKP-18401
    $0.00
    Qty in Cart: 0
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    $0.00
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  • HKP HK MR556/416 Upper 8" 416C Style Conversion Kit HKP HK MR556/416 Upper 8" 416C Style Conversion Kit

    HKP HK MR556/416 Upper 8" 416C Style Conversion Kit

    HKP HK Parts

    $1,285.95
    MR556 & HK416 Upper Conversion Kit - 8" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 8" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...
    HKP-18629
    $1,285.95
    Qty in Cart: 0
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    $1,285.95
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  • Out Of Stock
    HKP HK MR556/416 Upper 9" 416C Style Conversion Kit HKP HK MR556/416 Upper 9" 416C Style Conversion Kit

    HKP HK MR556/416 Upper 9" 416C Style Conversion Kit

    HKP HK Parts

    $899.95
    MR556 & HK416 Upper Conversion Kit - 9" - HK 416C StyleFinally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...
    HKP-18674
    $899.95
    Qty in Cart: 0
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    $899.95
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  • HKP HK UMP (9mm) Conversion Kit - 3 Lug - Threaded Barrel 1/2 x 28 HKP HK UMP (9mm) Conversion Kit - 3 Lug - Threaded Barrel 1/2 x 28

    HKP HK UMP (9mm) Conversion Kit - 3 Lug - Threaded Barrel 1/2 x 28

    HKP HK Parts

    $999.95
    HK UMP 9mm Conversion Kit - USA - 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The total conversion requires approximately 5...
    HKP-02285
    $999.95
    Qty in Cart: 0
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    $999.95
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  • Out Of Stock
    HKP HK UMP (9mm) Conversion Kit -Threaded 1/2 x 28 HKP HK UMP (9mm) Conversion Kit -Threaded 1/2 x 28

    HKP HK UMP (9mm) Conversion Kit -Threaded 1/2 x 28

    HKP HK Parts

    $679.95
    HK UMP 9mm Conversion Kit - Threaded Barrel 1/2 x 28 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop...
    HKP-02287
    $679.95
    Qty in Cart: 0
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    $679.95
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  • MM HK UMP 9mm Conversion Kit - 16 inch Barrel MM HK UMP 9mm Conversion Kit - 16 inch Barrel

    MM HK UMP 9mm Conversion Kit - 16 inch Barrel

    Michaels Machines

    $889.95
    HK UMP 9mm Conversion Kit US made 9mmUMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with the total...
    HKP-02284
    $889.95
    Qty in Cart: 0
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    $889.95
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  • Out Of Stock
    Tommy Built HK G36C .300 BLK Conversion Kit Tommy Built HK G36C .300 BLK Conversion Kit

    Tommy Built HK G36C .300 BLK Conversion Kit

    Tommy Built

    $874.95
    HK G36C 556/223 To .300 Blackout Caliber Conversion - USA The Tom Bostic .300 BLK conversion barrel set up is designed to drop in any G36C or Sl8 to G36C conversion and reuse your G36C op-rod/spring set, gas piston & barrel nut. Each set up comes...
    HKP-18268
    $874.95
    Qty in Cart: 0
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    $874.95
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