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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  • New - H&K G36/SL8 (5.56/.223) Cocking Handle Axle Pin - HKP-01877
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    HK G36, SL8 Cocking Handle Axle Pin

    H&K Heckler & Koch

    $11.95
    HK German G36 & SL8 Cocking Handle Axle Pin This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear.  Compatible With: HK G36 HK SL8
    HKP-01877
    $11.95
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  • HK21, HK21E, HK23E, HK11A1 Barrel Handle New - HK 21/21E/23E/11 & Barrel Handle - HKP-00244-M
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    HK21, HK21E, HK23E, HK11A1 Barrel Handle

    Michaels Machines

    $74.95
    HK 21, 21E, 23E, HK11 Barrel Handle US-made barrel handle.  A great alternative for the original barrel handles that are no longer in production. Available in black or OD green and compatible with 5.56 and .308 platforms. Compatible...
    HKP-00244-M
    $74.95
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  • New - PTR Tactical Handguard Rail Screw - HKP-16744
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    Handguard Rail Screw - Tactical

    PTR

    $0.69
    PTR Tactical Handguard Rail Screw The 6, 4, 3 & 2 inch rail sections use these screws to attach themselves to the tactical forearm. This is the screw that is used on all the tactical forearm rails (2 inch, 3 inch, 4 inch, 6 inch). A great spare to...
    HKP-16744
    $0.69
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  • New - H&K MR556/MR762/416/417 Ambidextrous Selector Clamping Sleeve - HKP-22062
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    HK416, MR556, HK417, MR762 Selector Lever Clamping Sleeve - Ambi

    H&K Heckler & Koch

    $5.95
    H&K MR556/MR762/416/417 Ambidextrous Selector Clamping Sleeve German H&K factory clamping sleeve for ambidextrous selector levers on MR556, MR762, HK416, and HK417. Compatible With: HK MR556 A1/A4 HK416 HK MR762 A1/A4 HK417
    HKP-22062
    $5.95
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  • New - H&K Detent Plate For HK45/HK45C Variant 5,6 & 9 - HKP-02079
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    HK45, HK45C Detent Plate - Variant 5,6,9

    H&K Heckler & Koch

    $54.95
    H&K Detent Plate New HK German manufacture safety ONLY detent plate. This detent plate will convert the firearm to safety only with no decocking functions. Compatible With: HK45 HK45 Tactical HK45C HK45C Tactical
    HKP-02079
    $54.95
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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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  • 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
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  • New - H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever - HKP-15433 HK416, MR556, MR762 Selector Lever Axle- Semi Auto
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    HK416, MR556, MR762 Selector Lever Axle- Semi Auto

    H&K Heckler & Koch

    $44.95
    H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever HK German safe, semi selector axle for the MR 556 & HK 416 family of firearms. All steel construction. Compatible With: HK MR556 HK 416 HK MR762
    HKP-15433
    $44.95
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  • New - H&K HK USP Left Side V1/5/9 Decocking Lever - HKP-01169 HK USP Decocking Lever - Left Side V1/5/9
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    HK USP Decocking Lever - Left Side V1/5/9

    H&K Heckler & Koch

    $59.99
    H&K HK USP Left Side V1/5/9 Decocking Lever A Heckler and Koch genuine part. This item allows a right-handed shooter to have the safety and or decocking functions on the LEFT side of the firearm. This is to be used in conjunction with the correct...
    HKP-01169
    $59.99
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  • New - H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin - HKP-14050 HK G36, SL8 Retaining Pin And O-Ring
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    HK G36, SL8 Retaining Pin And O-Ring

    H&K Heckler & Koch

    $11.95
    Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8
    HKP-14050
    $11.95
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  • 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

    $9.95
    HK UMP Catch Release Lever Or Trip Lever For All UMP Lowers  
    HKP-01890
    $9.95
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  • New - H&K HK MR762/417 Magazine Catch Spring - HKP-16520
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    HK417, MR762 Magazine Catch Spring

    H&K Heckler & Koch

    $9.95
    H&K HK MR762/417 Magazine Catch Spring New HK German manufacture. Factory correct magazine catch for the magazine release. Compatible With: HK MR762 HK 417 HK G28
    HKP-16520
    $9.95
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