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 USP Hammer, Hammer Strut Roll Pin - HKP-02268
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    HK USP Hammer, Hammer Strut Roll Pin

    H&K Heckler & Koch

    Now: $5.36
    Was: $5.95
    HK USP Hammer, Hammer Strut Roll Pin This pin installs in the hammer and makes contact with the hammer strut.
    Now: $5.36
    Was: $5.95
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    Now: $5.36
    Was: $5.95
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  • On Sale
    New - HK G36/SL8 (5.56/.223) Bolt Heads Ejector - HKP-18371 HK G36, SL8 Bolt Head Ejector - USA
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    HK G36, SL8 Bolt Head Ejector - USA

    Now: $12.55
    Was: $13.95
    HK G36/SL8 Ejector For All G36, SL8 bolts -US Made
    Now: $12.55
    Was: $13.95
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    Now: $12.55
    Was: $13.95
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  • On Sale
    New - MKE Trigger Pack Ejector Lever Axle - HKP-22241 MKE Trigger Pack Ejector Lever Axle MKE HKP-22241
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    HK90 Series Ejector Lever Axle for SEF, Navy, and Burst Trigger Packs

    MKE

    Now: $10.10
    Was: $17.95
    MKE Trigger Pack Ejector Lever Axle Fits all SEF & Ambidextrous style HK trigger packs regardless of caliber. MKE product made on HK tooling.  Fits all of the following 90 series trigger packs: SEF, O,1 Navy Burst
    Now: $10.10
    Was: $17.95
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    Now: $10.10
    Was: $17.95
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  • On Sale
    New - MKE HK 93/53/33 Push Pin Spring - HKP-22228 MKE Push Pin Spring MKE HKP-22228
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    HK33, HK53, HK93 Spring - Push Pin

    MKE

    Now: $1.97
    Was: $3.95
    MKE HK33, HK53, HK33 Push Pin Spring A must have replacement spring to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn out springs that come loose while in action...
    Now: $1.97
    Was: $3.95
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    Now: $1.97
    Was: $3.95
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  • On Sale
    New - HKP HK 91/G3 Extractor - Enhanced Coated Polish - HKP-22182-M HK91, G3 Extractor - Enhanced Coated Polish
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    HK91, G3 Extractor - Enhanced Coated Polish

    HKP HK Parts

    Now: $19.96
    Was: $24.95
    HKP HK 91/G3 Extractor - Enhanced Coated Polish  Built for dependable performance, this polished and coated extractor delivers smooth cycling and consistent extraction. A great choice for both upgrades and routine replacements. Compatible With: HK...
    Now: $19.96
    Was: $24.95
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    Now: $19.96
    Was: $24.95
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  • On Sale
    New - H&K MR556 A4/416 A5 2.1mm Gas Vent Screw - HKP-22052
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    HK416 A5, MR556 A4 Gas Vent Screw - 2.1mm

    H&K Heckler & Koch

    Now: $31.46
    Was: $34.95
    H&K MR556 A4/416 A5 2.1mm Gas Vent Screw German 2.1mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    Now: $31.46
    Was: $34.95
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    Now: $31.46
    Was: $34.95
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  • Out Of Stock
    On Sale
    New - H&K VP9, VP40 Backstrap - Small - Gray - HKP-18125 HK VP9, VP40 Backstrap - Small - Gray

    HK VP9, VP40 Backstrap - Small - Gray

    H&K Heckler & Koch

    Now: $17.95
    Was: $19.95
    H&K VP9, VP40 Backstrap - Small - Gray   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40
    Now: $17.95
    Was: $19.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $17.95
    Was: $19.95
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  • Out Of Stock
    On Sale
    New - H&K HK Mark 23 Hammer Strut Spring - HKP-01581

    HK Mark 23 Hammer Strut Spring

    H&K Heckler & Koch

    Now: $8.05
    Was: $8.95
    HK Mark 23 Hammer Strut Spring
    Now: $8.05
    Was: $8.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $8.05
    Was: $8.95
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    Out Of Stock
  • On Sale
    New - H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin - HKP-02469 HK G36, SL8 Retaining Pin - Firing Pin
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    HK G36, SL8 Retaining Pin - Firing Pin

    H&K Heckler & Koch

    Now: $9.86
    Was: $10.95
    H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin Compatible With: HK G36 HK SL8
    Now: $9.86
    Was: $10.95
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    Now: $9.86
    Was: $10.95
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  • New - H&K 23E/13E Factory German Firing Pin - HKP-00820
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    HK23E, HK13E Firing Pin

    H&K Heckler & Koch

    $109.95
    H&K 23E/13E (5.56/.223) Factory German Firing Pin New HK23E & HK13E factory German firing pin. These firing pins are no longer in production from HK.  We have a limited number available and once they are gone, they are gone for good...
    $109.95
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    $109.95
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  • Out Of Stock
    On Sale
    New - H&K 93/53/33 (5.56/.223) Magazine Catch - Latest Design - HKP-01059

    HK33, HK53, HK93 Magazine Catch - Latest Design

    H&K Heckler & Koch

    Now: $44.96
    Was: $49.95
    HK German Factory HK93, 33, 33K & HK53 Ejector Lever New HK German 93,33,53 mag catch for magazine release.  Compatible With: HK93 HK33 HK53 HK33K Clone or other custom builds
    Now: $44.96
    Was: $49.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $44.96
    Was: $49.95
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  • Out Of Stock
    On Sale
    HK416, MR556 Mag Catch - Ambi HK416, MR556 Mag Catch - Ambi

    HK416, MR556 Mag Catch - Ambi

    H&K Heckler & Koch

    Now: $83.66
    Was: $92.95
    H&K HK MR556, HK416 Mag Catch - Ambi Factory HK ambidextrous magazine catch/release. Compatible With: HK416 A5 HK MR556 A4 NOT compatible with earlier variants with single-side controls
    Now: $83.66
    Was: $92.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $83.66
    Was: $92.95
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    Out Of Stock
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