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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  • Out Of Stock
    New - H&K HK VP40/USPC 9mm/.40 S&W Extractor - HKP-01130 HK VP40, USP Compact 9mm, .40 S&W Extractor

    HK VP40, USP Compact 9mm, .40 S&W Extractor

    H&K Heckler & Koch

    $42.95
    H&K HK VP40/USPC 9mm/.40 S&W Extractor New HK German factory OEM part. Compatible With: HK VP40 (Not for the VP9) HK USP Compact 9mm HK USP Compact 40 & .357 HK USP LEM models
    HKP-01130
    $42.95
    Out Of Stock
    Qty in Cart: 0
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    $42.95
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  • On Sale
    New - H&K MP7 Lock Washer - HKP-21978
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    HK MP7 Lock Washer

    H&K Heckler & Koch

    Now: $4.45
    Was: $4.95
    H&K MP7 Lock Washer Factory lock washer for the MP7 platform.  Specifications: Inside diameter: 4.10mm Outside diameter: 7.75mm Compatible With: HK MP7  
    HKP-21978
    Now: $4.45
    Was: $4.95
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    Now: $4.45
    Was: $4.95
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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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    $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 - Incomplete - BLEMISHED
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    HK MP5, HK91, G3, HK33 Cocking Tube End Cap - Incomplete - BLEMISHED

    H&K Heckler & Koch

    Now: $21.95
    Was: $39.95
    H&K Cocking Tube End Cap/Dust Cap - BLEMISHED SOLD INDIVIDUALLY - VARYING CONDITION SHOWN INCOMPLETE 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...
    HKP-00099-B
    Now: $21.95
    Was: $39.95
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    Now: $21.95
    Was: $39.95
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  • On Sale
    New - HK G41 Dust Cover w/ Ejection Port Door - HKP-02048 HK G41 Ejection Port Cover
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    HK G41 Ejection Port Cover

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    Heckler and Koch HK G41 Dust Cover / Ejection Port Door  
    HKP-02048
    Now: $26.95
    Was: $29.95
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    Now: $26.95
    Was: $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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  • On Sale
    New - H&K HK Mark 23 Sear Lever - HKP-01785
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    HK Mark 23 Sear Lever

    H&K Heckler & Koch

    Now: $41.95
    Was: $45.95
    HK Mark 23 Sear Lever
    HKP-01785
    Now: $41.95
    Was: $45.95
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    Now: $41.95
    Was: $45.95
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  • Out Of Stock
    New - HKP HK USPC/45C Titanium Firing Pin - HKP-17801

    HK45C, USPC Firing Pin - Titanium

    HKP HK Parts

    $49.95
    HKP HK USPC/45C Titanium Firing Pin A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium pins also carry less...
    HKP-17801
    $49.95
    Out Of Stock
    Qty in Cart: 0
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    $49.95
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  • Out Of Stock
    New - H&K HK USP V5/6/7 Complete Bobbed Hammer - HKP-01934

    HK USP V5, V6, V7 Complete Bobbed Hammer

    H&K Heckler & Koch

    $0.00
    HK USP V5/6/7 Complete Bobbed Hammer   Compatible With: HK USP 9mm HK USP 40
    HKP-01934
    $0.00
    Out Of Stock
    Qty in Cart: 0
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    $0.00
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  • Out Of Stock
    New - H&K HK USP Series Old Style Catch - HKP-01176

    HK USP Series Old Style Catch

    H&K Heckler & Koch

    $29.95
    H&K HK USP Series Old Style Catch Compatible With: HK USP 9mm HK USP 40 HK USP 45 HK USP Compact 9mm HK USP Compact 40 HK USP Compact 357 HK USP Compact 45 HK USP Compact LEM
    HKP-01176
    $29.95
    Out Of Stock
    Qty in Cart: 0
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    $29.95
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  • On Sale
    New - H&K HK416/MR556 Locking Plate - Magazine - HKP-13484 HK416, MR556 Magazine Locking Plate
    Add to Cart

    HK416, MR556 Magazine Locking Plate

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    HK German HK MR556 & HK 416 Magazine Locking Plate  
    HKP-13484
    Now: $8.95
    Was: $9.95
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    Now: $8.95
    Was: $9.95
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  • Out Of Stock
    New - H&K USC (.45 ACP) Magazine Locking Plate Insert - HKP-16384 HK USC Magazine Locking Plate Insert - .45 ACP

    HK USC Magazine Locking Plate Insert - .45 ACP

    H&K Heckler & Koch

    $8.95
    H&K USC (.45 ACP) Magazine Locking Plate Insert
    HKP-16384
    $8.95
    Out Of Stock
    Qty in Cart: 0
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    $8.95
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