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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  • New - H&K VP Short Slide Release Lever - Left - HKP-22000 HK VP9 Short Slide Release Lever - Left
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    HK VP9 Short Slide Release Lever - Left

    H&K Heckler & Koch

    $54.95
    H&K VP Short Slide Release Lever - Left Short Left side slide release for VP series pistols. Can be combined with 260498, 50254710, 50239708. Compatible With: VP9/VP9 Tactical  VP9 Match VP9L VP9SK VP9K VP9 A1 VP40    
    HKP-22000
    $54.95
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  • New - B&T Takedown Pin Rear - HKP-21727 B&T Takedown Pin Rear
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    B&T Takedown Pin Rear

    B&T Brugger & Thomet

    $12.95
    B&T APC Takedown Pin - Rear Factory B&T rear take down pin for the APC receiver. Compatible With: APC Series Standard receiver Glock receiver Sig receiver
    HKP-21727
    $12.95
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  • New - HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin - HKP-21504 HK UMP, USC Sling Pin, Stock Block B
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    HK UMP, USC Sling Pin, Stock Block B

    HKP HK Parts

    $49.95
    HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin The original thumb screw version for all stock block B's.
    HKP-21504
    $49.95
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  • New - H&K HK MP5, HK SP5 10 Round Magazine Spring - HKP-19454
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    HK MP5, HK94, SP5 Magazine Spring - 10 Round

    H&K Heckler & Koch

    $6.95
    10 Round Magazine Spring - HK MP5, 94, SP5 A must-have repair and replacement part great for spares. Compatible With: All factory spec steel 10 round MP5, 94 style curved magazines
    HKP-19454
    $6.95
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    $6.95
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  • New - H&K HK USP Hammer, Hammer Strut Roll Pin - HKP-02268
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    HK USP Hammer, Hammer Strut Roll Pin

    H&K Heckler & Koch

    $5.95
    HK USP Hammer, Hammer Strut Roll Pin This pin installs in the hammer and makes contact with the hammer strut.
    HKP-02268
    $5.95
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    $5.95
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  • New - H&K HK MR556/416 Ejector Spring - HKP-02538
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    HK416, MR556 Ejector Spring

    H&K Heckler & Koch

    $39.99
    Heckler and Koch HK416 and HK MR556 Ejector Spring Compatible With: HK 416, MR556
    HKP-02538
    $39.99
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  • New - H&K 93/91/33/53/G3 (5.56/.223) & (7.62x51/.308) Bolt Locking Lever Axle Pin - HKP-17624
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    HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Axle Pin

    H&K Heckler & Koch

    $9.95
    HK Bolt Carrier Bolt Locking Lever Axle Pin - G3, 91, PTR & HK93, 33, 53 Brand new HK German bolt locking lever axle pin or cylinder pin for HK locking levers. Compatible With: G3, 91, PTR HK 93, 33, 53 HK21, 23, 11, 13 PSG1, MSG90
    HKP-17624
    $9.95
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    $9.95
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  • On Sale
    HK MP5, 90 Series Locking Plate for Rollers HK MP5, 90 Series Locking Plate for Rollers
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    HK MP5, 90 Series Locking Plate for Rollers

    Special Weapons

    Now: $3.95
    Was: $8.95
    Special Weapons HK MP5, 90 Series Locking Plate for Rollers SOLD INDIVIDUALLY This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: MP5,...
    HKP-99399
    Now: $3.95
    Was: $8.95
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    Now: $3.95
    Was: $8.95
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  • New - H&K HK P30/SK Axle Pawl - HKP-02214
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    HK P30, P30SK Axle Pawl

    H&K Heckler & Koch

    $8.95
    HK P30/SK Axle Pawl
    HKP-02214
    $8.95
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  • Out Of Stock
    New - H&K MP5 40/10 +2 Roller - HKP-00334 HK MP5 Locking Roller +2 - .40 S&W / 10mm

    HK MP5 Locking Roller +2 - .40 S&W / 10mm

    H&K Heckler & Koch

    $19.99
    MP5 40,10 +2 Roller New HK German MP5 40/10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.  Please Note: The price listed is per roller. Order 2 (pair)...
    HKP-00334
    $19.99
    Out Of Stock
    Qty in Cart: 0
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    $19.99
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  • HK45/USP Extended Magazine Spring HKP HK Parts HKP-22299 HK45/USP Extended Magazine Spring HKP HK Parts HKP-22299
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    HK45, USP Magazine Spring - Extended

    HKP HK Parts

    $11.95
    HK45/USP Extended Magazine Spring .45 ACP Replacement spring for +7 and +10 HK Parts magazine extensions. Compatible With: HK45/HK45 Compact HK USP
    HKP-22299
    $11.95
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  • Out Of Stock
    New - HKP HK UMP Stock Block - B Push Pin - HKP-21249 HK UMP Stock Block B Push Pin

    HK UMP Stock Block B Push Pin

    HKP HK Parts

    $34.95
    Stock Block B Sling Pin With Loop washer & Quick Pull Pin for UMP/USC (.40 S&W/ .45 ACP/9mm)   
    HKP-21249
    $34.95
    Out Of Stock
    Qty in Cart: 0
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    $34.95
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