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 G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin - HKP-14050 HK G36, SL8 Retaining Pin And O-Ring
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    HK G36, SL8 Retaining Pin And O-Ring

    H&K Heckler & Koch

    $11.95
    Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8
    HKP-14050
    $11.95
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  • New - HK G36/SL8 (5.56/.223) Cocking Handle Axle Pin - HKP-18367 HK G36, SL8 Cocking Handle Axle Pin - USA
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    HK G36, SL8 Cocking Handle Axle Pin - USA

    USA

    $10.95
    HK G36, SL8 Cocking Handle Axle Pin - US Made 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 models HK SL8 models
    HKP-18367
    $10.95
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  • New - H&K USC/UMP (.40 S&W) Extractor - HKP-00264 HK USC/UMP (.40 S&W) Extractor
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    HK USC/UMP (.40 S&W) Extractor

    H&K Heckler & Koch

    $54.95
    HK German UMP Or USC .40 Extractor New HK German factory OEM part. This is a high wear and replacement item as the .40 cal cartridge has a high impulse that results in an increased occurrence of this extractor wearing out and breakage. A must-have...
    HKP-00264
    $54.95
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  • New - H&K MR556/MR762 A4 Safety Lever - Left - HKP-21965 HK MR556, MR762 A4 Safety Lever - Left
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    HK MR556, MR762 A4 Safety Lever - Left

    H&K Heckler & Koch

    $12.95
    H&K MR556/MR762 A4 Safety Lever - Left Left-side selector lever for MR-series ambidextrous safety systems. Compatible With: HK MR762 A1/A4 HK MR556 A1/A4
    HKP-21965
    $12.95
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  • Out Of Stock
    On Sale
    New - TPM AR-15 Enhanced Firing Pin - HKP-20911 AR-15 Firing Pin - Enhanced

    AR-15 Firing Pin - Enhanced

    Tactical Precision MFG

    Now: $15.95
    Was: $24.99
    TPM AR-15 Enhanced Firing Pin These AR-15 firing pins are precision machined using CNC Swiss turning centers. The titanium AR-15 firing pin is made from Grade 6 titanium which has an ultimate tensile strength of 140,000 psi. titanium is 40% lighter than...
    HKP-20911
    Now: $15.95
    Was: $24.99
    Out Of Stock
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    Now: $15.95
    Was: $24.99
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  • New - H&K HK VP9, HK VP40 Catch Spring for Disassembly Lever - HKP-16786
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    HK VP9, VP40 Disassembly Lever Spring

    H&K Heckler & Koch

    $5.95
    Catch Spring For Disassembly Lever HK VP9, HK VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40
    HKP-16786
    $5.95
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  • New - H&K HK MR762/417/G28 Handguard Rail System Screw - Black - HKP-16601 HK416, MR556, HK417, MR762 Handguard Locking Screw
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    HK416, MR556, HK417, MR762 Handguard Locking Screw

    H&K Heckler & Koch

    $16.95
    HK416, MR556, HK417, MR762 - Handguard Locking Screw Replacement handguard locking screw that secures the handguard to the upper receiver.  Compatible With: HK HK416 HK MR556 HK HK417 (2 required per handguard) HK MR762 (2 required per handguard)
    HKP-16601
    $16.95
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  • New - H&K HK Mark 23 Rear Sight Retaining Screw - HKP-01628
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    HK Mark 23 Rear Sight Retaining Screw

    H&K Heckler & Koch

    $19.95
    HK Mark 23 Rear Sight Retaining Screw
    HKP-01628
    $19.95
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  • New - H&K HK P30 Series Right Slide Release Lever - Black - HKP-01880 HK P30 Series Right Slide Release Lever
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    HK P30 Series Right Slide Release Lever

    H&K Heckler & Koch

    $44.95
    HK P30 Series Right Slide Release Lever  
    HKP-01880
    $44.95
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  • New - H&K HK MR556/MR762/416/417 Disconnector - HKP-02674
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    HK416, HK417, MR556, MR762 Disconnector

    H&K Heckler & Koch

    $18.95
    H&K HK MR556/MR762/416/417 Disconnector For Lower New HK German manufactured part. This is the latest generation of HK disconnector for the HK MR and HK 416/417 family of firearms. Compatible With: HK MR556 HK 416 HK MR762 HK 417 Please Note: HK...
    HKP-02674
    $18.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever Support Tube - HKP-01883 HK UMP, USC Cocking Lever Support Tube
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    HK UMP, USC Cocking Lever Support Tube

    H&K Heckler & Koch

    $19.95
    HK UMP & USC Cocking Lever Support Tube  
    HKP-01883
    $19.95
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  • New - H&K USP/45/45C New Style Bobbed Hammer - HKP-01589
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    HK USP, 45, 45C New Style Bobbed Hammer

    H&K Heckler & Koch

    $59.95
    HK USP, USPC & HK45 & HK45C Bobbed Hammer - New Style This has the shorter, lower-profile "bobbed" hammer. The new style hammer has a cutout for 2005 and later production. Compatible With: USP 9mm & USP Compact 9mm USP 40 & USP Compact...
    HKP-01589
    $59.95
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    $59.95
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