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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  • On Sale
    New - HKP HK VP9/VP9SK, VP40 Enhanced Support Sleeve - Green - HKP-19631 HK VP9, VP9SK, VP40 Enhanced Support Sleeve - Green
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    HK VP9, VP9SK, VP40 Enhanced Support Sleeve - Green

    HKP HK Parts

    Now: $7.75
    Was: $14.96
    Enhanced Support Sleeve VP9, VP9SK & VP40 - Aluminum Alloy - Green A must-have upgrade part for the VP series of pistols! The support sleeve is found in the VP slide and is the part that depresses to allow you to remove the slide plate, firing pin...
    HKP-19631
    Now: $7.75
    Was: $14.96
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  • On Sale
    New - H&K HK USP V1/V2 Old Style Complete Hammer - HKP-01602
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    HK USP V1, V2 Old Style Complete Hammer

    H&K Heckler & Koch

    Now: $29.95
    Was: $79.95
    HK USP V1/V2 Old Style Complete Hammer HK USP complete with pin - hammer variant 1, 2, and 9. Old style all metal USP spurred hammer.
    HKP-01602
    Now: $29.95
    Was: $79.95
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  • New - H&K HK VP9SK Locking Plate for 12 Round Magazine - HKP-20898 HK VP9SK Magazine Locking Plate - 12 Round
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    HK VP9SK Magazine Locking Plate - 12 Round

    $7.95
    H&K HK VP9SK Locking Plate for 12 Round Magazine New HK German factory part. This is the locking plate for the bottom of the magazine spring on the newer VP9SK 12 Round magazine. Great spares to have on hand to keep your magazines in tip top shape!
    HKP-20898
    $7.95
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  • New - H&K HK VP9/VP9SK, HK VP40 Insert - HKP-16801 HK VP9, VP9SK, VP40 Insert
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    HK VP9, VP9SK, VP40 Insert

    H&K Heckler & Koch

    $24.95
    H&K HK VP9/VP9SK, HK VP40 Insert Insert for HK VP9, VP40. Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16801
    $24.95
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  • New - HK G36/SL8 (5.56/.223) Extractor Axle - HKP-18370
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    HK G36, SL8 Extractor Axle - USA

    USA

    $6.95
    HK G36, SL8 Extractor Axle- US Made New extractor axle for use on all G36, SL8 bolt heads. This part can become heavily worn and is prone to breakage. Compatible With: HK G36 models HK SL8 models
    HKP-18370
    $6.95
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  • New - H&K HK VP9/VP9SK, HK VP40 Disconnector - HKP-16793
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    HK VP9, VP9SK, HK VP40 Disconnector

    H&K Heckler & Koch

    $19.95
    Disconnector For HK VP9, VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16793
    $19.95
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  • New - H&K HK P9S Catch Spring - HKP-02150
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    HK P9S Catch Spring

    H&K Heckler & Koch

    $7.95
    HK P9S Catch Spring
    HKP-02150
    $7.95
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  • Out Of Stock
    New - H&K HK USP/USPC/45 Series Complete Sear - Black - HKP-01173 HK45 Series, USP, USPC Complete Sear

    HK45 Series, USP, USPC Complete Sear

    H&K Heckler & Koch

    $43.95
    Complete Sear Compatible With: HK USP Full-Size 9mm, .40 & 45 HK USP Compact 9mm, .40 & 45 HK45, HK45 Tactical HK45C, HK45C Tactical
    HKP-01173
    $43.95
    Out Of Stock
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  • New - H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Ambidextrous Sling Loop - HKP-00611 HK G36, SL8, UMP, USC Handguard Sling Loop - Ambidextrous
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    HK G36, SL8, UMP, USC Handguard Sling Loop - Ambidextrous

    H&K Heckler & Koch

    $40.95
    UMP, USC, SL8, & G36 Ambidextrous Sling Loop Or Eyebolt For Sling - German HK The addition of the HK eyelet creates a sling attachment point that will enable you to mount a sling using any of the hard mounting points located on the forearm of the...
    HKP-00611
    $40.95
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  • Out Of Stock
    New - HKP HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear - HKP-01847 HK UMP, USC, G36, SL8 Sear - 9mm, .40 S&W, .45 ACP,  5.56 / .223

    HK UMP, USC, G36, SL8 Sear - 9mm, .40 S&W, .45 ACP, 5.56 / .223

    HKP HK Parts

    $49.95
    Sear For The HK UMP, USC, G36, & SL8 - USA CNC machined from aircraft grade aluminum that is hard coat anodized that will last much longer than the factory HK part that's made with plastic. This part counts as 1 US-made 922r compliant part. 100% USA...
    HKP-01847
    $49.95
    Out Of Stock
    Qty in Cart: 0
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  • Used - Compression Rod - 90's Series - Titanium - HKP-20887 HK 90's Series Compression Rod - Titanium
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    HK 90's Series Compression Rod - Titanium

    HKP HK Parts

    $29.95
    Compression Rod - 90's Series - Titanium The H&K burst trigger pack compression rods and compression rod springs are the foremost wear/breakage components in burst packs. This replacement compression rod is constructed from titanium, offering...
    HKP-20887
    $29.95
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  • New - HK G36, HK SL8, HK 416, HK MR556 Gas Piston - Black - HKP-14540 HK416, MR556, G36, SL8 Gas Piston
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    HK416, MR556, G36, SL8 Gas Piston

    USA

    $79.95
    HK G36, HK SL8, HK 416, & HK MR556 Gas Piston Complete assembly with 3X rings installed and nitrided black. Counts as one US-made compliant part for your SL8-G36 style conversion. This is one of the best parts to use on the conversion as it is one of...
    HKP-14540
    $79.95
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    $79.95
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