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 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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    $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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  • New - H&K HK Mark 23 Safety Detent - HKP-01782
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    HK Mark 23 Safety Detent

    H&K Heckler & Koch

    $10.95
    HK Mark 23 Safety Detent  
    HKP-01782
    $10.95
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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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  • New - H&K HK USPC Original Style Firing Pin - HKP-01286
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    HK USP Compact Firing Pin - Original Style

    H&K Heckler & Koch

    $59.95
    HK USP Compact Firing Pin - Original Style Compatible With: HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact LEM
    HKP-01286
    $59.95
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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
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    $29.95
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  • New - H&K HK416/MR556 Locking Plate - Magazine - HKP-13484 HK416, MR556 Magazine Locking Plate
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    HK416, MR556 Magazine Locking Plate

    H&K Heckler & Koch

    $9.95
    HK German HK MR556 & HK 416 Magazine Locking Plate  
    HKP-13484
    $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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  • Out Of Stock
    Used - HK Locking Roller -4 , 7.96mm - HKP-17558 HK Locking Roller -4 , 7.96mm

    HK Locking Roller -4 , 7.96mm

    HKP HK Parts

    $8.95
    7.96mm - Undersized -4 Roller For HK Roller Lock Bolt HeadHK spec under-sized roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. An easy way to remember the size you need to...
    HKP-17558
    $8.95
    Out Of Stock
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    $8.95
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  • On Sale
    New - H&K HK P30 Series Right Slide Release Shorty - Black - HKP-02487 HK P30 Series Right Slide Release Short - BLEMISHED
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    HK P30 Series Right Slide Release Short - BLEMISHED

    H&K Heckler & Koch

    Now: $26.95
    Was: $32.95
    HK P30 Series Right Slide Release Shorty INSTALLATION MARKS - DAMAGED PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This is a shorter version...
    HKP-02487-B
    Now: $26.95
    Was: $32.95
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    Now: $26.95
    Was: $32.95
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  • On Sale
    HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - BLEMISHED HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - BLEMISHED
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    HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - BLEMISHED

    HKP HK Parts

    Now: $24.95
    Was: $34.95
    HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Billeted alloy UMP magazine release...
    HKP-17919-B
    Now: $24.95
    Was: $34.95
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    Now: $24.95
    Was: $34.95
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