Small Parts

Small Parts

Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.

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  • Out Of Stock
    New - HKP HK USP New Style Titanium Firing Pin - HKP-17826

    HK USP Firing Pin - New Style - Titanium

    HKP HK Parts

    $49.95
    HKP HK USP New Style Titanium Firing Pin A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium pins also carry...
    HKP-17826
    $49.95
    Out Of Stock
    Qty in Cart: 0
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    $49.95
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  • Out Of Stock
    New - H&K HK USPC V3 Control Lever - HKP-01436 HK USP Compact V3 Control Lever

    HK USP Compact V3 Control Lever

    H&K Heckler & Koch

    $32.95
    HK USPC V3 Control Lever Compatible With: HK USP Compact 9mm HK USP Compact 357 SIG HK USP Compact 40 S&W HK USP Compact 45 ACP
    HKP-01436
    $32.95
    Out Of Stock
    Qty in Cart: 0
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    $32.95
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  • New - H&K SL8 (5.56/.223) Catch - HKP-16349 HK SL8 (5.56/.223) Catch
    Add to Cart

    HK SL8 (5.56/.223) Catch

    H&K Heckler & Koch

    $7.95
    H&K SL8 (5.56/.223) Catch
    HKP-16349
    $7.95
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    Qty in Cart: 0
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    $7.95
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  • Out Of Stock
    New - HK UMP (9mm) Extractor - HKP-02625

    HK UMP (9mm) Extractor

    USA

    $39.95
    New US-Made USC & UMP 9mm Extractor: This is the perfect spare part for your UMP or USC 9mm conversion.  Please Note: HK considers this a high wear and replacement item. Once it's removed from the carrier, the spring tension...
    HKP-02625
    $39.95
    Out Of Stock
    Qty in Cart: 0
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    $39.95
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  • New - HK UMP/USC/SL8/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Fixed Rear Sight Flat Spring - HKP-16635
    Add to Cart

    HK UMP, USC, SL8, G36 Fixed Rear Sight Flat Spring

    H&K Heckler & Koch

    $8.95
    HK G36, SL8 & USC, UMP Fixed Rear Sight Flat Spring Compatible With: G36 SL8 USC. 45 UMP 9mm UMP .40 UMP .45
    HKP-16635
    $8.95
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    $8.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Hammer Spring - Right - HKP-01892
    Add to Cart

    HK UMP, USC Hammer Spring - Right

    H&K Heckler & Koch

    $14.95
    HK UMP & USC Right Side Hammer Spring For Lowers
    HKP-01892
    $14.95
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    $14.95
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  • New - H&K 21E/11E/PSG1/MSG90 Firing Pin - HKP-01758 HK21E, HK11E, PSG1, MSG90 Firing Pin
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    HK21E, HK11E, PSG1, MSG90 Firing Pin

    H&K Heckler & Koch

    $119.95
    HK German 21E, 11E, PSG1, & MSG90 Firing Pin New HK genuine German firing pin. These firing pins are no longer in production from HK.  We have a limited number available and once they are gone, they are gone for good. Compatible With: HK...
    HKP-01758
    $119.95
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    $119.95
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  • New - H&K MP5 Stock Locking Lever With Spring - HKP-02560 HK MP5, HK91, G3, HK33, HK53, HK93 A3 Stock Locking Lever with Spring
    Add to Cart

    HK MP5, HK91, G3, HK33, HK53, HK93 A3 Stock Locking Lever with Spring

    H&K Heckler & Koch

    $199.95
    HK MP5, HK91, G3, HK33/53/93 A3 Retractable Stock Locking Lever With Locking Spring Compatible With: MP5 (NOT compatible with MP5 .22 LR) HK G3, HK91 HK33, HK53, HK93
    HKP-02560
    $199.95
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    Qty in Cart: 0
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    $199.95
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  • On Sale
    HK Trigger Pack Ejector Lever Axle - USED HK Trigger Pack Ejector Lever Axle - USED
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    HK Trigger Pack Ejector Lever Axle - USED

    H&K Heckler & Koch

    Now: $12.95
    Was: $19.95
    HK Trigger Pack Ejector Lever Axle - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German ejector lever axle pin for all HK trigger packs. This is the factory correct axle pin that holds the...
    HKP-01091-USED
    Now: $12.95
    Was: $19.95
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    Now: $12.95
    Was: $19.95
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  • HK MP5 Safety Select Catch Lever Sleeve H&K Heckler & Koch HKP-22337 HK MP5 Safety Select Catch Lever Sleeve H&K Heckler & Koch HKP-22337
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    HK MP5 Safety Select Catch Lever Sleeve - Ambi

    H&K Heckler & Koch

    $12.95
    HK MP5 Safety Select Catch Lever Sleeve - Ambidextrous Trigger Packs Factory replacement sleeve for the safety selector catch lever. Compatible With the Following Ambidextrous Trigger Packs: HK MP5/MP5K HK91/G3 HK93/53/33 HK23/21/11 ***Not compatible...
    HKP-22337
    $12.95
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    $12.95
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  • New - H&K HK P7/P9 Firing Pin - HKP-22231 H&K HK P7/P9 Firing Pin H&K Heckler & Koch HKP-22231
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    HK P7, P9 Firing Pin

    H&K Heckler & Koch

    $79.95
    H&K Firing Pin 9mm Short/7.65mm - HK P7/P9 Ensures reliable ignition by striking the cartridge primer during firing. Compatible With: HK P7/P9  
    HKP-22231
    $79.95
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    $79.95
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  • On Sale
    Add to Cart

    HK P30 Series Magazine Release - BLEMISHED

    HKP HK Parts

    Now: $34.95
    Was: $49.95
    HKP HK P30 Series Magazine Release - BLEMISHED ONLY 1 ORANGE MAGAZINE RELEASE AVAILABLE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts Magazine Release...
    HKP-99284-OR-B
    Now: $34.95
    Was: $49.95
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    Now: $34.95
    Was: $49.95
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