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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  • B&T TP9/MP9 Extractor Spring 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 B&T manufactured TP9 & MP9 extractor spring. A must have spare part! Compatible With: TP9 MP9
    HKP-17300
    $9.95
    Qty in Cart: 0
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    $9.95
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  • H&K 23E/13E/G43 (7.62x51/.308) & (5.56/.223) Extractor H&K 23E/13E/G43 (7.62x51/.308) & (5.56/.223) Extractor

    H&K 23E/13E/G43 (7.62x51/.308) & (5.56/.223) Extractor

    H&K Heckler & Koch

    $119.95
    HK23E & HK13E Extractor New HK German and no longer in production. Compatible With: MM 23E HK 13E
    HKP-00818
    $119.95
    Qty in Cart: 0
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    $119.95
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  • H&K HK 416 Ejector Retaining Pin

    H&K HK 416 Ejector Retaining Pin

    H&K Heckler & Koch

    $6.95
    HK 416 Ejector Retaining Pin 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.
    HKP-00053
    $6.95
    Qty in Cart: 0
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    $6.95
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  • Out Of Stock
    H&K HK Mark 23 Decocker C-Clip

    H&K HK Mark 23 Decocker C-Clip

    H&K Heckler & Koch

    $0.00
    HK Mark 23 Decocking C-Clip (Lock Washer)
    HKP-01629
    $0.00
    Qty in Cart: 0
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    $0.00
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  • H&K HK P Series Control Latch

    H&K HK P Series Control Latch

    H&K Heckler & Koch

    $19.95
    HK P Series Control Latch Compatible With: HK P30 HK P30L HK P30SK HK P2000 HK P2000SK Please Note: This is the correct part for the CDA V4.1 Trigger found in Europe.
    HKP-01957
    $19.95
    Qty in Cart: 0
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    $19.95
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  • H&K HK P2000 .40 S&W / .357 SIG Recoil Spring Assembly

    H&K HK P2000 .40 S&W / .357 SIG Recoil Spring Assembly

    H&K Heckler & Koch

    $79.95
    HK P2000 Recoil Spring Guide Rod Assembly Compatible With: HK P2000 40 S&W HK P2000 .357 SIG
    HKP-01614
    $79.95
    Qty in Cart: 0
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    $79.95
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  • H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch

    H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch

    H&K Heckler & Koch

    $29.95
    H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch Brand new HK German manufacture. No longer in production. These are the last units that HK made. Last call!
    HKP-15432
    $29.95
    Qty in Cart: 0
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    $29.95
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  • H&K MP5 40/10 -4 Roller H&K MP5 40/10 -4 Roller

    H&K MP5 40/10 -4 Roller

    H&K Heckler & Koch

    $19.95
    HK German MP5 40/10 -4 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.  Please Note: The price listed is per roller. Order 2 (pair) for a complete set for...
    HKP-00337
    $19.95
    Qty in Cart: 0
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    $19.95
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  • HK G36/SL8/USC/UMP Rear Sight Screw

    HK G36/SL8/USC/UMP Rear Sight Screw

    H&K Heckler & Koch

    $19.95
    HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8 USC, UMP
    HKP-16382
    $19.95
    Qty in Cart: 0
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    $19.95
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  • HKP HK 23E/13E (7.62x51/.308) & (5.56/.223) Firing Pin - Titanium

    HKP HK 23E/13E (7.62x51/.308) & (5.56/.223) Firing Pin - Titanium

    HKP HK Parts

    $49.95
    HK23E, MM23E, 13E Firing Pin - Titanium Grade 6 weapons grade titanium manufacture. Made in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK weapon system. Get the lightest, strongest firing...
    HKP-17770
    $49.95
    Qty in Cart: 0
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    $49.95
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  • H&K HK MR762/417 Axle Extractor Retaining Pin

    H&K HK MR762/417 Axle Extractor Retaining Pin

    H&K Heckler & Koch

    $9.95
    H&K HK MR762/417 Axle Extractor Retaining Pin This extractor retaining pin is constructed of durable, black finished, steel and is an OEM factory original H&K component. This retaining pin is designed to fit the HK417 & MR762 model of rifles...
    HKP-16810
    $9.95
    Qty in Cart: 0
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    $9.95
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  • H&K HK USP Full Size Right Side Ambidextrous Control Lever

    H&K HK USP Full Size Right Side Ambidextrous Control Lever

    H&K Heckler & Koch

    $29.95
    H&K HK USP Full Size Right Side Ambidextrous Control Lever Good spare to have on hand as they are prone to damage or cracking. This item will only fit the left side ambidextrous control lever with axle.
    HKP-16625
    $29.95
    Qty in Cart: 0
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    $29.95
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  • HK 45/45 Tactical Firing Pin

    HK 45/45 Tactical Firing Pin

    H&K Heckler & Koch

    $44.95
    HK 45 & 45 Tactical Firing Pin A must-have spare part for your HK45 pistol. Compatible With: HK45 HK45 Tactical
    HKP-02221
    $44.95
    Qty in Cart: 0
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    $44.95
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  • USA HK UMP Left Hammer Spring USA HK UMP Left Hammer Spring

    USA HK UMP Left Hammer Spring

    USA

    $9.95
    USA HK UMP Left Hammer Spring New U.S hammer spring- left side A high wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With:  HK UMP models 45, .40 & 9mm USC .45 and other...
    HKP-20840
    $9.95
    Qty in Cart: 0
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    $9.95
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  • B&T TP9/MP9 Firing Pin - Black

    B&T TP9/MP9 Firing Pin - Black

    B&T Brugger & Thomet

    $44.95
    B&T Firing Pin For B&T TP9, MP9 B&T MP9, TP9 firing pin. Original Swiss made Brugger and Thomet production in new condition. Compatible With: TP9 MP9
    HKP-17297
    $44.95
    Qty in Cart: 0
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    $44.95
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  • H&K HK 45C LEM Hammer Spring

    H&K HK 45C LEM Hammer Spring

    H&K Heckler & Koch

    $9.95
    Hammer Spring For HK 45C LEM Models This hammer spring is the factory correct LEM hammer spring for the HK45C and HK45CT. This is the spring needed to use any other variant of LEM kit to be complete to be used on the HK45C pistol. This is also a great...
    HKP-15789
    $9.95
    Qty in Cart: 0
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    $9.95
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  • H&K HK P Series Disconnector H&K HK P Series Disconnector

    H&K HK P Series Disconnector

    H&K Heckler & Koch

    $9.95
    HK P Series Disconnector Compatible With These Models In 9mm, .40 S&W, & .357 SIG: HK P30  HK P30L HK P2000 HK P2000SK
    HKP-01794
    $9.95
    Qty in Cart: 0
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    $9.95
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  • H&K HK P30 V3 Series Hammer H&K HK P30 V3 Series Hammer

    H&K HK P30 V3 Series Hammer

    H&K Heckler & Koch

    $55.95
    HK P30 V3 Series Hammer New German HK production. Compatible With: HK P30 V3 HK P30L V3 HK P30LS V3 HK P30SK V3
    HKP-02503
    $55.95
    Qty in Cart: 0
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    $55.95
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  • H&K HK USPC Variant 4 Right Decock Control Lever - Black

    H&K HK USPC Variant 4 Right Decock Control Lever - Black

    H&K Heckler & Koch

    $39.95
    USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...
    HKP-02264
    $39.95
    Qty in Cart: 0
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    $39.95
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  • H&K USC (.45 ACP) Lower Locking Lever Axle

    H&K USC (.45 ACP) Lower Locking Lever Axle

    H&K Heckler & Koch

    $8.95
    HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowers
    HKP-16376
    $8.95
    Qty in Cart: 0
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    $8.95
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  • HKP HK MP5 (.40 S&W) Locking Roller +6

    HKP HK MP5 (.40 S&W) Locking Roller +6

    HKP HK Parts

    $11.95
    HK US MP540  Locking Roller, +6 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 to...
    HKP-17565
    $11.95
    Qty in Cart: 0
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    $11.95
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  • GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut

    GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut

    GSG9

    $53.00
    HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 Variants
    HKP-18252
    $53.00
    Qty in Cart: 0
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    $53.00
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  • H&K 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) Internal Buffer With Break Springs

    H&K 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) Internal Buffer With Break Springs

    H&K Heckler & Koch

    $17.95
    HK German G3, 91, PTR & HK 33, 93 Internal Buffer Brake Spring New HK German Brake Springs for the standard buffer found on the HK G3, 91, PTR & HK93, 33, 53 rear stocks. Compatible With: All standard A2 fixed stock buffers
    HKP-17424
    $17.95
    Qty in Cart: 0
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    $17.95
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  • H&K 93/53/33 (5.56/.223) Firing Pin

    H&K 93/53/33 (5.56/.223) Firing Pin

    H&K Heckler & Koch

    $69.95
    H&K 93, 53, & 33 (5.56/.223) Firing Pin This is the factory-correct HK German firing pin and is a great replacement part. This is also a great upgrade for your HK 223.556 clones. This part is no longer available from HK as this part is out of...
    HKP-00192
    $69.95
    Qty in Cart: 0
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    $69.95
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  • H&K HK G36/SL8 Sling Pin Forearm Retaining Clip H&K HK G36/SL8 Sling Pin Forearm Retaining Clip

    H&K HK G36/SL8 Sling Pin Forearm Retaining Clip

    H&K Heckler & Koch

    $8.95
    HK G36 & SL8 Sling Pin Retaining Clip Compatible With: HK G36 HK G36K- older version only HK SL8-1 , SL8-6 Factory Forearm
    HKP-16366
    $8.95
    Qty in Cart: 0
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    $8.95
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  • H&K HK P7M13 Magazine Follower - Black

    H&K HK P7M13 Magazine Follower - Black

    H&K Heckler & Koch

    $39.95
    HK P7M13 Magazine Follower - Black All steel construction, brand new HK German manufacture.  Compatible With: HK P7M13 magazines
    HKP-02364
    $39.95
    Qty in Cart: 0
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    $39.95
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