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 HK MR556/MR762/416 Fire Control Detent Stop Pin - HKP-15272

    HK416, MR556, MR762 Fire Control Detent Stop Pin

    H&K Heckler & Koch

    $20.95
    H&K HK MR556/MR762/416 Fire Control Detent Stop Pin HK German manufacture. Compatible With: HK MR556 HK416 HK MR762
    HKP-15272
    $20.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin - HKP-16517
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    HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin

    H&K Heckler & Koch

    $5.95
    H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
    HKP-16517
    $5.95
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  • New - H&K HK Mark 23 Firing Pin Block Spring - HKP-01599
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    HK Mark 23 Firing Pin Block Spring

    H&K Heckler & Koch

    $9.99
    HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45
    HKP-01599
    $9.99
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  • New - H&K HK 30/P30L/45/45C Hammer Bearing - HKP-01800 HK45, HK45 Compact, P30, P30L Hammer Bearing
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    HK45, HK45 Compact, P30, P30L Hammer Bearing

    H&K Heckler & Koch

    $14.95
    HK 30, P30L, 45, & 45C Hammer Bearing Compatible With: HK P30 HK P30L HK45 HK45 Compact Please Note: This item does not have the lockout device built in for those that prefer NOT to have the lockout feature.
    HKP-01800
    $14.95
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  • New - H&K HK P Series LEM Hammer - HKP-15436 HK P Series LEM Hammer
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    HK P Series LEM Hammer

    H&K Heckler & Koch

    $65.95
    H&K HK P Series LEM Hammer Factory HK German hammer. Compatible With: HK P30 P30L P30SK HK P2000 P2000SK
    HKP-15436
    $65.95
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    New - H&K HK P Series Complete Spurred Hammer - HKP-16540 HK P Series Complete Spurred Hammer

    HK P Series Complete Spurred Hammer

    H&K Heckler & Koch

    $53.95
    H&K HK P Series Complete Spurred Hammer New German HK spurred hammer complete. Compatible With: All non LEM pistol below: P30, P30L, P30SK P2000 P2000 SK
    HKP-16540
    $53.95
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  • New - H&K HK USPC/45/45C Magazine Locking Plate - Black - HKP-02250 HK45, HK45C, USP Compact Magazine Locking Plate
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    HK45, HK45C, USP Compact Magazine Locking Plate

    H&K Heckler & Koch

    $7.95
    HK USPC, 45, & 45C Magazine Locking Plate New factory German HK. Compatible With: HK45 HK45 Tactical HK45C HK45C Tactical HK USPC .45 HK USPC .45 Tactical
    HKP-02250
    $7.95
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  • New - H&K G36/SL8 (5.56/.223) Cocking Handle Axle Pin - HKP-01877
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    HK G36, SL8 Cocking Handle Axle Pin

    H&K Heckler & Koch

    $11.95
    HK German G36 & SL8 Cocking Handle Axle Pin This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear.  Compatible With: HK G36 HK SL8
    HKP-01877
    $11.95
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  • New - PTR Tactical Handguard Rail Screw - HKP-16744
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    Handguard Rail Screw - Tactical

    PTR

    $0.69
    PTR Tactical Handguard Rail Screw The 6, 4, 3 & 2 inch rail sections use these screws to attach themselves to the tactical forearm. This is the screw that is used on all the tactical forearm rails (2 inch, 3 inch, 4 inch, 6 inch). A great spare to...
    HKP-16744
    $0.69
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  • New - H&K Cocking Tube End Cap Detent - HKP-18050
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    HK MP5, HK91, G3, HK33 Cocking Tube Detent End Cap

    H&K Heckler & Koch

    $4.95
    HK German Cocking Tube End Cap/Dust Cap Detent HK German cocking tube detent for all steel and aluminum cocking tube end caps. Made of steel and finished in black.
    HKP-18050
    $4.95
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  • New - HKP Torx Binary Upgrade Screw Set - HKP-21816
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    HK Torx Screw Set for Binary Selector Lever - Upgrade

    HKP HK Parts

    $2.95
    HKP Torx Binary Upgrade Screw Set Upgrade your binary selector levers with our Torx hardware set.  Torx hardware is less likely to strip than standard allen key hardware.  Good spares to have on hand as well. Note: Each set comes with 2 screws.
    HKP-21816
    $2.95
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  • New - H&K Detent Plate For HK45/HK45C Variant 5,6 & 9 - HKP-02079
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    HK45, HK45C Detent Plate - Variant 5,6,9

    H&K Heckler & Koch

    $54.95
    H&K Detent Plate New HK German manufacture safety ONLY detent plate. This detent plate will convert the firearm to safety only with no decocking functions. Compatible With: HK45 HK45 Tactical HK45C HK45C Tactical
    HKP-02079
    $54.95
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