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 Mark 23 Hammer Strut Spring - HKP-01581
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    HK Mark 23 Hammer Strut Spring

    H&K Heckler & Koch

    Now: $7.95
    Was: $8.95
    HK Mark 23 Hammer Strut Spring
    HKP-01581
    Now: $7.95
    Was: $8.95
    Add to Cart
    Qty in Cart: 0
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    Now: $7.95
    Was: $8.95
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  • Out Of Stock
    On Sale
    New - H&K HK USP/45/P2000 Sear Axle - HKP-01251

    HK45, USP, P2000 Sear Axle

    H&K Heckler & Koch

    Now: $12.95
    Was: $13.95
    Sear Axle Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .357 SIG HK USP Compact .45 ACP HK USP Compact LEM HK45 HK45 Compact HK P2000 9mm HK P2000 .40 S&W HK P2000 .357...
    HKP-01251
    Now: $12.95
    Was: $13.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $12.95
    Was: $13.95
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    Out Of Stock
  • On Sale
    New - H&K HK MR556/416 Ejector Spring - HKP-02538
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    HK416, MR556 Ejector Spring

    H&K Heckler & Koch

    Now: $35.95
    Was: $39.99
    Heckler and Koch HK416 and HK MR556 Ejector Spring Compatible With: HK 416, MR556
    HKP-02538
    Now: $35.95
    Was: $39.99
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    Qty in Cart: 0
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    Now: $35.95
    Was: $39.99
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  • Out Of Stock
    New - GSG9 HK416, MR556 Firing Pin - HKP-20650 HK416, MR556 Firing Pin - Silver

    HK416, MR556 Firing Pin - Silver

    GSG9

    $34.95
    Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27
    HKP-20650
    $34.95
    Out Of Stock
    Qty in Cart: 0
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    $34.95
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    Out Of Stock
  • Out Of Stock
    New - B&T TP9/MP9 Extractor Spring - HKP-17300 B&T TP9, MP9 Extractor Spring

    B&T TP9, MP9 Extractor Spring

    B&T Brugger & Thomet

    $9.95
    B&T TP9, MP9 Extractor Spring Swiss-manufactured TP9 and MP9 extractor spring. Compatible With: B&T TP9, MP9
    HKP-17300
    $9.95
    Out Of Stock
    Qty in Cart: 0
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    $9.95
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    Out Of Stock
  • On Sale
    New - H&K HK P30 Recoil Rod Compression Spring - HKP-16653
    Add to Cart

    HK P30 Recoil Rod Compression Spring

    H&K Heckler & Koch

    Now: $6.95
    Was: $7.95
    H&K HK P30 Recoil Rod Compression Spring
    HKP-16653
    Now: $6.95
    Was: $7.95
    Add to Cart
    Qty in Cart: 0
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    Now: $6.95
    Was: $7.95
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  • Out Of Stock
    New - H&K HK USP Hammer Rebound Spring - HKP-16678

    HK USP Hammer Spring

    H&K Heckler & Koch

    $7.95
    H&K HK USP Hammer Rebound Spring For use on DAO only NOT LEM hammers for the following pistols. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .357 SIG HK USP Compact .45...
    HKP-16678
    $7.95
    Out Of Stock
    Qty in Cart: 0
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    $7.95
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    Out Of Stock
  • On Sale
    New - H&K HK 417/MR556/416/MR776 Pin Look Index - HKP-02639
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    HK416, HK417, MR556, MR762 Pin Look Index

    H&K Heckler & Koch

    Now: $5.95
    Was: $6.95
    H&K HK 417/MR556/416/MR776 Pin Look Index   Compatible With: HK MR556 HK 417 HK MR556  
    HKP-02639
    Now: $5.95
    Was: $6.95
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    Qty in Cart: 0
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    Now: $5.95
    Was: $6.95
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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
    Add to Cart

    HK G36, SL8 Bolt Head Ejector - USA

    Now: $11.95
    Was: $13.95
    HK G36/SL8 Ejector For All G36, SL8 bolts -US Made
    HKP-18371
    Now: $11.95
    Was: $13.95
    Add to Cart
    Qty in Cart: 0
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    Now: $11.95
    Was: $13.95
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  • On Sale
    HK MP5, G3, PTR, HK93 Push Button for Magazine Catch H&K Heckler & Koch HKP-22325 HK MP5, G3, PTR, HK93 Push Button for Magazine Catch H&K Heckler & Koch HKP-22325
    Add to Cart

    HK MP5, G3, HK93 Magazine Catch Push Button- Used

    H&K Heckler & Koch

    Now: $4.95
    Was: $8.95
    H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used   Factory original HK push button replacement part. Limited quantity available.   This is a used part, sold AS-IS, and is not eligible for return.  Compatible...
    HKP-99316
    Now: $4.95
    Was: $8.95
    Add to Cart
    Qty in Cart: 0
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    Now: $4.95
    Was: $8.95
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  • On Sale
    New - B&T APC Takedown Pin - Front - HKP-21737 B&T APC Takedown Pin - Front
    Add to Cart

    B&T APC Takedown Pin - Front

    B&T Brugger & Thomet

    Now: $10.95
    Was: $11.95
    B&T APC Takedown Pin - Front Factory B&T front take down pin for the APC receiver. Compatible With: APC Series Standard receiver Glock receiver Sig receiver
    HKP-21737
    Now: $10.95
    Was: $11.95
    Add to Cart
    Qty in Cart: 0
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    Now: $10.95
    Was: $11.95
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  • Out Of Stock
    On Sale
    New - B&T TP9/MP9 Firing Pin - Black - HKP-17297

    B&T TP9, MP9 Firing Pin

    B&T Brugger & Thomet

    Now: $40.95
    Was: $44.95
    B&T Firing Pin For B&T TP9, MP9 Genuine Swiss Brugger and Thomet firing pin for the TP9 and MP9 platforms. Compatible With: B&T TP9 B&T MP9
    HKP-17297
    Now: $40.95
    Was: $44.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $40.95
    Was: $44.95
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    Out Of Stock
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