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/45 New Style Hammer Strut - HKP-01250

    HK45, USP New Style Hammer Strut

    H&K Heckler & Koch

    $12.95
    H&K HK USP/45 New Style Hammer Strut Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Tactical, Elite, Expert HK45 HK45 Tactical
    HKP-01250
    $12.95
    Out Of Stock
    Qty in Cart: 0
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    $12.95
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  • On Sale
    New - H&K USC/UMP (.40 S&W) Extractor - HKP-00264 HK USC, UMP Extractor - .40 S&W
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    HK USC, UMP Extractor - .40 S&W

    H&K Heckler & Koch

    Now: $49.95
    Was: $54.95
    HK German UMP Or USC .40 Extractor New HK German factory OEM part. This is a high wear and replacement item as the .40 cal cartridge has a high impulse that results in an increased occurrence of this extractor wearing out and breakage. A must-have...
    HKP-00264
    Now: $49.95
    Was: $54.95
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    Was: $54.95
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  • On Sale
    New - H&K HK 30/P30L/45/45C Hammer Bearing - HKP-01800 HK45, HK45 Compact, P30, P30L Hammer Bearing
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    HK45, HK45 Compact, P30, P30L Hammer Bearing

    H&K Heckler & Koch

    Now: $13.95
    Was: $14.95
    HK 30, P30L, 45, & 45C Hammer Bearing Compatible With: HK P30 HK P30L HK45 HK45 Compact Please Note: This item does not have the lockout device built in for those that prefer NOT to have the lockout feature.
    HKP-01800
    Now: $13.95
    Was: $14.95
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  • On Sale
    New - H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin - HKP-14050 HK G36, SL8 Firing Pin Retaining Pin, Complete
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    HK G36, SL8 Firing Pin Retaining Pin, Complete

    H&K Heckler & Koch

    Now: $10.95
    Was: $11.95
    Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8
    HKP-14050
    Now: $10.95
    Was: $11.95
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    Now: $10.95
    Was: $11.95
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  • On Sale
    New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin - HKP-16517
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    HK UMP, USC Bolt Catch Pin

    H&K Heckler & Koch

    Now: $4.95
    Was: $5.95
    H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
    HKP-16517
    Now: $4.95
    Was: $5.95
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    Now: $4.95
    Was: $5.95
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  • On Sale
    New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever Support Tube - HKP-01883 HK UMP, USC Cocking Lever Support Tube
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    HK UMP, USC Cocking Lever Support Tube

    H&K Heckler & Koch

    Now: $17.95
    Was: $19.95
    HK UMP & USC Cocking Lever Support Tube  
    HKP-01883
    Now: $17.95
    Was: $19.95
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    Now: $17.95
    Was: $19.95
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  • On Sale
    New - H&K HK Mark 23/SOCOM Firing Pin Block - HKP-01579
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    HK Mark 23, SOCOM Firing Pin Block

    H&K Heckler & Koch

    Now: $32.95
    Was: $35.95
    Heckler and Koch Firing Pin Block for Mark 23 and SOCOM This is the real deal and it is plated in nickel and made for the HK Mark 23 and SOCOM models. Compatible With: HK Mark 23 SOCOM Models
    HKP-01579
    Now: $32.95
    Was: $35.95
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    Now: $32.95
    Was: $35.95
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  • On Sale
    New - H&K HK MR556/416 Ejector Retaining Pin - HKP-00053
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    HK416, MR556 Ejector Retaining Pin

    H&K Heckler & Koch

    Now: $5.95
    Was: $6.95
    H&K Heckler and Koch's Ejector Retaining Pin for your HK416 and HK MR556 This factory HK German part is the pin that holds the ejector in place on the bolt head. Great to have as a spare part. Compatible With: HK416, MR556
    HKP-00053
    Now: $5.95
    Was: $6.95
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    Now: $5.95
    Was: $6.95
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  • On Sale
    New - H&K HK MR556/MR762/416/417 Disconnector Spring - Short - HKP-02675
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    HK416, MR556, HK417, MR762 Disconnector Spring - Short

    H&K Heckler & Koch

    Now: $6.95
    Was: $6.99
    Heckler and Koch HK416, MR556, HK417, MR762 Disconnector Spring - Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: HK416, MR556 HK417, MR762
    HKP-02675
    Now: $6.95
    Was: $6.99
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    Now: $6.95
    Was: $6.99
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  • On Sale
    New - H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer - HKP-01890 HK UMP Release Lever
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    HK UMP Release Lever

    H&K Heckler & Koch

    Now: $8.95
    Was: $9.95
    HK UMP Catch Release Lever Or Trip Lever For All UMP Lowers  
    HKP-01890
    Now: $8.95
    Was: $9.95
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    Now: $8.95
    Was: $9.95
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  • On Sale
    New - HKP HK MP5 40 Locking Roller -4 - HKP-17561
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    HK MP5 Locking Roller -4 - .40 S&W

    HKP HK Parts

    Now: $10.95
    Was: $11.95
    HK US MP540 Undersized Locking Roller, -4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...
    HKP-17561
    Now: $10.95
    Was: $11.95
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    Now: $10.95
    Was: $11.95
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  • New - H&K HK P7 Series Slide Removal Button Spring - HKP-01314
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    HK P7 Series Button Spring - Slide Removal

    H&K Heckler & Koch

    $7.95
    HK P7 Series Slide Removal Button Spring   This item is no longer in production. Get it while it's still available. Compatible With: PSP P7M8 P7M10 P7M13
    HKP-01314
    $7.95
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    $7.95
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