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 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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  • 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

    $9.95
    HK German HK MR556 & HK 416 Magazine Locking Plate  
    HKP-13484
    $9.95
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    $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
    Qty in Cart: 0
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    $8.95
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  • On Sale
    HK VP9, VP9SK, VP40 Firing Pin Striker - TiN - BLEMISHED
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    HK VP9, VP9SK, VP40 Firing Pin Striker - TiN - BLEMISHED

    HKP HK Parts

    Now: $29.95
    Was: $39.95
    HK VP9, VP9SK, VP40 Firing Pin Striker - TiN - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This firing pin fits...
    HKP-20464-TiN-B
    Now: $29.95
    Was: $39.95
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    Now: $29.95
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  • On Sale
    HK MP5, 90 Series Locking Plate for Rollers HK MP5, 90 Series Locking Plate for Rollers
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    HK MP5, 90 Series Locking Plate for Rollers

    Special Weapons

    Now: $3.95
    Was: $8.95
    Special Weapons HK MP5, 90 Series Locking Plate for Rollers SOLD INDIVIDUALLY This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: MP5,...
    HKP-99399
    Now: $3.95
    Was: $8.95
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    Now: $3.95
    Was: $8.95
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  • On Sale
    HK33, HK53, HK93 Extractor - USED HK33, HK53, HK93 Extractor - USED
    Add to Cart

    HK33, HK53, HK93 Extractor - USED

    H&K Heckler & Koch

    Now: $48.95
    Was: $67.95
    HK33, HK53, HK93 Extractor - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. A great replacement for your HK or clone. A high wear item that can become worn,...
    HKP-00189-USED
    Now: $48.95
    Was: $67.95
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    Now: $48.95
    Was: $67.95
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  • On Sale
    HK90 Series Cocking Tube End Cap - Aluminum - USED HK90 Series Cocking Tube End Cap - Aluminum - USED
    Add to Cart

    HK90 Series Cocking Tube End Cap - Aluminum - USED

    HKP HK Parts

    Now: $7.95
    Was: $12.95
    HK Cocking Tube End Cap - Aluminum - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Made from weight-saving aircraft-grade aluminum alloy. US-made. Compatible With: All 90 series HK firearms and...
    HKP-02806-USED
    Now: $7.95
    Was: $12.95
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    Now: $7.95
    Was: $12.95
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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
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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
    Add to Cart

    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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    Qty in Cart: 0
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    Now: $24.95
    Was: $34.95
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  • HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
    Add to Cart

    HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm

    H&K Heckler & Koch

    $12.95
    HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking components in place for proper fit and function. Compatible...
    HKP-22482
    $12.95
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    Qty in Cart: 0
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    $12.95
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  • HK MP5, AP5 Full Auto Sear Spring Spacer HK MP5, AP5 Full Auto Sear Spring Spacer
    Add to Cart

    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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