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 - H&K HK P7/P9 Extractor - HKP-22236 H&K HK P7/P9 Extractor H&K Heckler & Koch HKP-22236
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    HK P7, P9 Extractor

    H&K Heckler & Koch

    Now: $31.95
    Was: $34.95
    H&K HK P7/P9 Extractor - Short / 7.65mm Removes spent casings from the chamber of H&K P7 and P9 pistols for reliable cycling. Compatible With: HK P7 K3  
    HKP-22236
    Now: $31.95
    Was: $34.95
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    Qty in Cart: 0
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    Now: $31.95
    Was: $34.95
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  • On Sale
    HK MR762 Firing Pin - HKP-17795
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    HK MR762 Firing Pin

    HKP HK Parts

    Now: $25.95
    Was: $29.95
    H&K HK MR762 Firing Pin US made steel firing pin for MR762 platforms. Compatible With: HK MR762
    HKP-17795
    Now: $25.95
    Was: $29.95
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    Now: $25.95
    Was: $29.95
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  • On Sale
    New - H&K P30/L Loaded Chamber Indicator Compression Spring - HKP-02220
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    HK P30, P30L Loaded Chamber Indicator Compression Spring

    H&K Heckler & Koch

    Now: $4.95
    Was: $5.95
    H&K P30/L Loaded Chamber Indicator Compression Spring  
    HKP-02220
    Now: $4.95
    Was: $5.95
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    Qty in Cart: 0
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    Now: $4.95
    Was: $5.95
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  • On Sale
    New - H&K HK G36 Guide Rod Set Screw - HKP-01873
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    HK G36 Guide Rod Set Screw

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    HK G36 Guide Rod Set Screw Replacement guide rod set screw for HK G36 platforms. Designed to secure the guide rod assembly within the bolt carrier group during proper installation and maintenance. Compatible With: G36  
    HKP-01873
    Now: $8.95
    Was: $9.95
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    Qty in Cart: 0
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    Now: $8.95
    Was: $9.95
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  • On Sale
    New - GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut - HKP-18252 HK G36, SL8  Barrel Retaining Nut
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    HK G36, SL8 Barrel Retaining Nut

    GSG9

    Now: $45.95
    Was: $53.00
    HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 Variants
    HKP-18252
    Now: $45.95
    Was: $53.00
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    Qty in Cart: 0
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    Now: $45.95
    Was: $53.00
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  • On Sale
    HK91, G3 Firing Pin - Titanium HK91, G3 Firing Pin - Titanium
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    HK91, G3 Firing Pin - Titanium

    HKP HK Parts

    Now: $31.95
    Was: $34.95
    HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...
    HKP-17937
    Now: $31.95
    Was: $34.95
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    Qty in Cart: 0
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    Now: $31.95
    Was: $34.95
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  • HK MP5, AP5 Full Auto Sear Spring Spacer HK MP5, AP5 Full Auto Sear Spring Spacer
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    HK MP5, AP5 Full Auto Sear Spring Spacer

    MKE

    $1.95
    MKE Distance Sleeve for HK MP5 and AP5 Features: Precision-machined roller used in traditional roller-delayed trigger packs. Ensures perfect trigger geometry, smooth operation, and long-lasting reliability. Compatible With: HK MP5  Century...
    HKP-22477
    $1.95
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    Qty in Cart: 0
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    $1.95
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  • On Sale
    New - H&K CC9 Extractor Buffer - HKP-22131
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    HK CC9 Extractor Buffer

    H&K Heckler & Koch

    Now: $4.95
    Was: $5.95
    H&K CC9 Extractor Buffer Made in Germany by H&K, the extractor buffer for the CC9 cushions extractor movement and reduces wear during cycling. Compatible With: HK CC9  
    HKP-22131
    Now: $4.95
    Was: $5.95
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    Now: $4.95
    Was: $5.95
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  • On Sale
    New - HK 416 Bolt Hold Open Catch - HKP-99101 HK416 Catch - Bolt Hold Open
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    HK416 Catch - Bolt Hold Open

    USA

    Now: $19.95
    Was: $39.95
    HK 416 Bolt Hold Open Catch US-made bolt hold open catch for the HK 416. Compatible  With: HK 416 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE.  SALE IS FINAL.  
    HKP-99101
    Now: $19.95
    Was: $39.95
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    Now: $19.95
    Was: $39.95
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  • On Sale
    New - HKP HK VP9/VP9SK, HK VP40 Trigger Safety Latch - Black - HKP-16773 HK VP9, VP9SK, VP40 Safety Latch - Trigger
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    HK VP9, VP9SK, VP40 Safety Latch - Trigger

    HKP HK Parts

    Now: $3.95
    Was: $4.95
    HKP HK VP9/VP9SK, HK VP40 Trigger Safety Latch
    HKP-16773
    Now: $3.95
    Was: $4.95
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    Qty in Cart: 0
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    Now: $3.95
    Was: $4.95
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  • On Sale
    New - H&K HK VP9/VP9SK, HK VP40 Drop Safety - HKP-16836 HK VP9, VP9SK, HK VP40 Drop Safety
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    HK VP9, VP9SK, HK VP40 Drop Safety

    H&K Heckler & Koch

    Now: $42.95
    Was: $46.95
    H&K HK VP9/VP9SK, HK VP40 Drop Safety   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16836
    Now: $42.95
    Was: $46.95
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    Qty in Cart: 0
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    Now: $42.95
    Was: $46.95
    Subtotal:
  • On Sale
    New - H&K VP9/VP9SK, HK VP40 Axle For Drop Safety - HKP-16837 HK VP9, VP9SK, VP40 Drop Safety Axle
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    HK VP9, VP9SK, VP40 Drop Safety Axle

    H&K Heckler & Koch

    Now: $28.95
    Was: $31.95
    H&K VP9/VP9SK, HK VP40 Axle For Drop Safety
    HKP-16837
    Now: $28.95
    Was: $31.95
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    Qty in Cart: 0
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    Now: $28.95
    Was: $31.95
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