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 MR762 A4 2.4mm Gas Vent Screw - HKP-21952
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    HK MR762 A4 Gas Vent Screw - 2.4mm

    H&K Heckler & Koch

    $29.95
    H&K MR762 A4 2.4mm Gas Vent Screw German 2.4mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    HKP-21952
    $29.95
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  • New - H&K MR762 A4 2.0mm Gas Vent Screw - HKP-21944
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    HK MR762 A4 Gas Vent Screw - 2.0mm

    H&K Heckler & Koch

    $29.95
    H&K MR762 A4 2.0mm Gas Vent Screw German 2.0mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    HKP-21944
    $29.95
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  • New - H&K MR762 A4 2.3mm Gas Vent Screw - HKP-21943
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    HK MR762 A4 Gas Vent Screw - 2.3mm

    H&K Heckler & Koch

    $29.95
    H&K MR762 A4 2.3mm Gas Vent Screw German 2.3mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    HKP-21943
    $29.95
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  • New - H&K 21E/23E Left Receiver Reinforcement Rail Weldment - HKP-21907 HK21E, HK23E Left Receiver Reinforcement Rail Weldment
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    HK21E, HK23E Left Receiver Reinforcement Rail Weldment

    H&K Heckler & Koch

    $14.95
    H&K 21E/23E Left Receiver Reinforcement Rail Weldment Genuine German-made weldment for left-side receiver reinforcement rail. Precision-machined using the correct steel and milling for you HK21E or HK23E build. Compatible With: HK21E HK23E
    HKP-21907
    $14.95
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  • On Sale
    HK Cocking Tube End Cap - Dust Cap - BLEMISHED HK MP5, HK91, G3, HK33 Cocking Tube End Cap - Dust Cap - BLEMISHED
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    HK MP5, HK91, G3, HK33 Cocking Tube End Cap - Dust Cap - BLEMISHED

    H&K Heckler & Koch

    Now: $29.95
    Was: $39.95
    H&K Cocking Tube End Cap/Dust Cap - BLEMISHED SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This part is Factory HK, painted black and not...
    HKP-00099-B
    Now: $29.95
    Was: $39.95
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    Now: $29.95
    Was: $39.95
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  • New - B&T APC9 Selector Position Lock Spring - HKP-21764 B&T APC9 Selector Position Lock Spring
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    B&T APC9 Selector Position Lock Spring

    B&T Brugger & Thomet

    $4.95
    B&T APC9 Selector Position Lock Spring Compatible With: APC Series Standard receiver Glock receiver Sig receiver
    HKP-21764
    $4.95
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    $4.95
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  • New - H&K VP9SK Right Side Grip Panel - Medium - Gray - HKP-18923 HK VP9SK Right Side Grip Panel - Medium - Gray
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    HK VP9SK Right Side Grip Panel - Medium - Gray

    H&K Heckler & Koch

    $16.95
    H&K VP9SK Right Side Grip Panel - Medium - Gray New HK German manufactured. Right side medium size perfect for spare or for custom stippling projects. Drop-in part for your HK VPSK pistol. Compatible With: HK VP9SK
    HKP-18923
    $16.95
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  • New - H&K HK MR762/417 Hammer Axle - HKP-16622
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    HK417, MR762 Hammer Axle

    H&K Heckler & Koch

    $13.95
    H&K HK MR762/417 Hammer Axle   Compatible With: HK MR762 HK 417
    HKP-16622
    $13.95
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  • New - HK G41 Dust Cover w/ Ejection Port Door - HKP-02048 HK G41 Dust Cover w/ Ejection Port Door
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    HK G41 Dust Cover w/ Ejection Port Door

    H&K Heckler & Koch

    $29.95
    HK G41 Dust Cover W/ Ejection Port Door
    HKP-02048
    $29.95
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  • Out Of Stock
    New - H&K USP40 Expert Clamping Sleeve - HKP-02160

    HK USP40 Expert Clamping Sleeve

    H&K Heckler & Koch

    $9.95
    H&K USP40 Expert Clamping Sleeve
    HKP-02160
    $9.95
    Out Of Stock
    Qty in Cart: 0
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    $9.95
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    Out Of Stock
  • New - H&K HK Mark 23 Sear Lever - HKP-01785
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    HK Mark 23 Sear Lever

    H&K Heckler & Koch

    $45.95
    HK Mark 23 Sear Lever
    HKP-01785
    $45.95
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  • New - H&K HK Mark 23 Sear - HKP-01780 HK Mark 23 Sear
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    HK Mark 23 Sear

    H&K Heckler & Koch

    $94.95
    HK Mark 23 Sear   Factory HK replacement sear for the Mark 23 pistol.  
    HKP-01780
    $94.95
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    $94.95
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