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 416 Front Takedown Pin - HKP-21862 HK416, MR556 Takedown Pin - Front - A4 Style
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    HK416, MR556 Takedown Pin - Front - A4 Style

    H&K Heckler & Koch

    Now: $24.95
    Was: $26.95
    H&K HK416, MR556 A4 Front Takedown Pin  The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...
    HKP-21862
    Now: $24.95
    Was: $26.95
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  • Out Of Stock
    New - B&T Takedown Pin Rear - HKP-21727 B&T Takedown Pin Rear

    B&T Takedown Pin Rear

    B&T Brugger & Thomet

    $12.95
    B&T APC Takedown Pin - Rear Factory B&T rear take down pin for the APC receiver. Compatible With: APC Series Standard receiver Glock receiver Sig receiver
    HKP-21727
    $12.95
    Out Of Stock
    Qty in Cart: 0
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    $12.95
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  • On Sale
    New - H&K HK USP Series Hammer Strut Pin - HKP-01633
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    HK USP Series Hammer Strut Pin

    H&K Heckler & Koch

    Now: $6.95
    Was: $7.95
    HK USP Series Hammer Strut Pin Cylinder Pin ISO 8750 - 1.5 x 8mm.  Compatible With: HK USP 9mm HK USP 40 S&W HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact 45 ACP
    HKP-01633
    Now: $6.95
    Was: $7.95
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  • On Sale
    New - H&K USP/45/45C New Style Bobbed Hammer - HKP-01589
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    HK USP, 45, 45C New Style Bobbed Hammer

    H&K Heckler & Koch

    Now: $53.95
    Was: $59.95
    HK USP, USPC & HK45 & HK45C Bobbed Hammer - New Style This has the shorter, lower-profile "bobbed" hammer. The new style hammer has a cutout for 2005 and later production. Compatible With: USP 9mm & USP Compact 9mm USP 40 & USP Compact...
    HKP-01589
    Now: $53.95
    Was: $59.95
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  • On Sale
    New - HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel - HKP-17798
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    HK33, HK53, HK93 Firing Pin - Stainless Steel

    HKP HK Parts

    Now: $22.95
    Was: $24.95
    HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33
    HKP-17798
    Now: $22.95
    Was: $24.95
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    Now: $22.95
    Was: $24.95
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  • On Sale
    New - H&K HK SEF & Navy 3 Position Trigger Spring - HKP-22178
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    HK90 Trigger Spring- 3 Position - SEF and Navy

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    H&K HK SEF & Navy 3 Position Trigger Spring Elevate your HK 90 series performance with a factory-fresh trigger spring, designed for both semi and full-auto models. These are an essential upgrade for any 90 series owner, ensuring optimal...
    HKP-22178
    Now: $8.95
    Was: $9.95
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  • On Sale
    New - H&K 93/53/33 & HK21E/23E Cocking Handle Pivot Pin - HKP-21746 HK33, HK53, HK93, HK21E, 23E Cocking Handle Pivot Pin
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    HK33, HK53, HK93, HK21E, 23E Cocking Handle Pivot Pin

    H&K Heckler & Koch

    Now: $17.95
    Was: $18.95
    H&K 93/53/33 & HK21E/23E Cocking Handle Pivot Pin This genuine H&K cocking handle pivot pin allows smooth operation of the charging handle assembly. While the nipple on the 21E pin is slightly shorter than the 33 pin, it remains fully...
    HKP-21746
    Now: $17.95
    Was: $18.95
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  • On Sale
    New - H&K HK45C Hammer Spring - HKP-01805
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    HK45 Compact Hammer Spring

    H&K Heckler & Koch

    Now: $9.95
    Was: $10.95
    Hammer Spring For HK45 Compact This part is shorter than the HK45 hammer spring and is used on the HK45C only.
    HKP-01805
    Now: $9.95
    Was: $10.95
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    Now: $9.95
    Was: $10.95
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  • On Sale
    New - H&K G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring - HKP-01858
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    HK MP7, G36 Firing Pin Bolt O-Ring

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    HK G36 & MP7 Firing Pin - Bolt O-Ring   Compatible With: HK G36 HK MP7  
    HKP-01858
    Now: $8.95
    Was: $9.95
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  • On Sale
    New - H&K MP5F & MP5 40,10 Cocking Support Handle Spring - HKP-00426
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    HK MP5F, MP5 Compression Spring - Cocking Lever Support

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    H&K MP5F & MP5 40,10 Cocking Support Handle Spring One of these springs is required for use with the cocking handle/support assembly. You need the following - MP5 40 cocking tube support, MP5 40 cocking handle, and the cocking handle spring to...
    HKP-00426
    Now: $8.95
    Was: $9.95
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  • Out Of Stock
    New - H&K -2 Roller For Bolt Head 7.98mm - Under-sized - HKP-00505 HK -2 Roller For Bolt Head 7.98mm - Under-sized

    HK -2 Roller For Bolt Head 7.98mm - Under-sized

    H&K Heckler & Koch

    $19.95
    H&K -2 Roller For Bolt Head 7.98mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -2 roller. Please Note: The price listed is per roller. Order 2 (pair) for...
    HKP-00505
    $19.95
    Out Of Stock
    Qty in Cart: 0
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    $19.95
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  • On Sale
    New - H&K HK MP5, HK SP5 10 Round Magazine Spring - HKP-19454
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    HK MP5, HK94, SP5 Magazine Spring - 10 Round

    H&K Heckler & Koch

    Now: $5.95
    Was: $6.95
    10 Round Magazine Spring - HK MP5, 94, SP5 A must-have repair and replacement part great for spares. Compatible With: All factory spec steel 10 round MP5, 94 style curved magazines
    HKP-19454
    Now: $5.95
    Was: $6.95
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    Now: $5.95
    Was: $6.95
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