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 MR556/416 Ejection Port Cover - FDE - HKP-18062 HK416, MR556 Ejection Port Cover - FDE
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    HK416, MR556 Ejection Port Cover - FDE

    H&K Heckler & Koch

    Now: $53.96
    Was: $59.95
    HK German HK 416, MR556 Ejection Port Cover In FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest ejection port...
    Now: $53.96
    Was: $59.95
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    New - HKP HK P30 Series Enhanced Magazine Release - HKP-21153-M HK P30 Series Magazine Release - Enhanced
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    HK P30 Series Magazine Release - Enhanced

    HKP HK Parts

    Now: $39.96
    Was: $49.95
    Enhanced Magazine Release  - Alloy - HK P30, P30SK, P30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine without changing the...
    Now: $39.96
    Was: $49.95
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  • On Sale
    Used - H&K Trip Lever- Friction - Used - Surplus - HKP-17760 HK Trip Lever- Friction - Used - Surplus
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    HK Trip Lever- Friction - Used - Surplus

    H&K Heckler & Koch

    Now: $3.37
    Was: $3.74
    H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older HK trigger packs and all HK registered sear packs.
    Now: $3.37
    Was: $3.74
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    Was: $3.74
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    New - H&K HK .40 Barrel O-Ring - Green - HKP-01985 HK Pistol O-Ring - .40 S&W Green
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    HK Pistol O-Ring - .40 S&W Green

    H&K Heckler & Koch

    Now: $4.46
    Was: $4.95
    O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...
    Now: $4.46
    Was: $4.95
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    New - HKP Roller +5 - New - 8.05mm - HKP-19440 HP Roller +5 - New - 8.05mm
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    HP Roller +5 - New - 8.05mm

    HKP HK Parts

    Now: $7.19
    Was: $8.99
    Roller +5 - New - 8.05mm HK Parts Standard (8.05 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...
    Now: $7.19
    Was: $8.99
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  • On Sale
    New - H&K Magazine Catch - MP5, MP5K - Latest Style - HKP-00911 HK MP5, SP5K, HK94, SP89 Magazine Catch - 9mm - Latest Style
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    HK MP5, SP5K, HK94, SP89 Magazine Catch - 9mm - Latest Style

    H&K Heckler & Koch

    Now: $58.46
    Was: $64.95
    H&K Magazine Catch - Latest Style Genuine HK mag release for factory and clone firearms.  This component often resolves issues with mags not locking into position on HK clones and builds.  Constructed from a single piece of steel unlike the...
    Now: $58.46
    Was: $64.95
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    Was: $64.95
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  • On Sale
    New - H&K +2 Roller For Bolt Head 8.02mm - Over-sized - HKP-00507 HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm
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    HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm

    H&K Heckler & Koch

    Now: $35.96
    Was: $39.95
    H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec part. Please Note: The price listed is per roller...
    Now: $35.96
    Was: $39.95
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    New - H&K HK P30/45/P2000 Backstrap Roll Pin - HKP-02274
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    HK45, P30, P2000 Backstrap Roll Pin

    H&K Heckler & Koch

    Now: $5.36
    Was: $5.95
    HK P30, 45, & P2000 Backstrap Roll Pin This is the commonly replaced roll pin for the rear backstrap that you can swap and change to different sizes. Great spare to have on hand when doing maintenance on your HK pistol. HK suggests...
    Now: $5.36
    Was: $5.95
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  • On Sale
    New - HKP HK MP5 .22 Sling Clip Kit - Black - HKP-15706 HK MP5 .22 Sling Clip Kit
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    HK MP5 .22 Sling Clip Kit

    HKP HK Parts

    Now: $19.96
    Was: $24.95
    HKP HK MP5 .22 Sling Clip Kit Each unit will fit all models of the MP5 .22 that have the 3 mounting holes on the left side of the magwell. This item installs in a few mins and comes complete with all you need for the install. With the addition of this...
    Now: $19.96
    Was: $24.95
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  • On Sale
    New - H&K HK P7 Series Grip Screw - Black - HKP-01229
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    HK P7 Series Pistol Grip Screw

    H&K Heckler & Koch

    Now: $8.05
    Was: $8.95
    H&K HK P7 Series Grip Screw   HK German P7 series factory grip screw for the left or right side grip. The grip screw commonly strips out or can lose it's new finish with use. This part is a great spare to have on hand.   Compatible...
    Now: $8.05
    Was: $8.95
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  • On Sale
    New - H&K MP5, HK94, MP5K, SP89 & SP5K Firing Pin - HKP-00061
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    HK MP5, HK94 Pin - Firing

    H&K Heckler & Koch

    Now: $44.96
    Was: $49.95
    H&K MP5, HK94, MP5K, SP89 & SP5K Firing Pin - German Compatible With: MP5 HK94 MP5K SP89 SP5K 
    Now: $44.96
    Was: $49.95
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  • On Sale
    New - H&K 91/G3 (7.62x51/.308) Firing Pin Spring - HKP-00498
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    HK91, G3 Spring - Firing Pin

    H&K Heckler & Koch

    Now: $8.96
    Was: $9.95
    HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.
    Now: $8.96
    Was: $9.95
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