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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  • H&K MSG90 (7.62x51/.308) Rollers 8.00mm Set - Titanium

    H&K MSG90 (7.62x51/.308) Rollers 8.00mm Set - Titanium

    H&K Heckler & Koch

    $284.95
    HK German MSG-90 Titanium 8.00mm Set (one of two rollers) Half Moon Rollers Half moon rollers.  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 order -...
    HKP-00227
    $284.95
    Qty in Cart: 0
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    H&K PSG1/MSG90 (7.62x51/.308) Complete Factory Locking Roller Set - (12 rollers)

    H&K PSG1/MSG90 (7.62x51/.308) Complete Factory Locking Roller Set - (12 rollers)

    H&K Heckler & Koch

    $0.00
    HK PSG1 Factory Locking Roller Set Complete   RARE! (Every Size) That HK Made For The MSG90 / HKPSG1/ & HK23E AS Follows - 6, - 4, - 2, Standard 8mm, +2, +4 (Pair Of Each Size) PSG1 / 23E Half Moon Roller Set Complete (Total Of 12 Rollers) More...
    HKP-00822
    $0.00
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    H&K Thread Protector/Spare Parts Holder Grip Cap - USED H&K Thread Protector/Spare Parts Holder Grip Cap - USED

    H&K Thread Protector/Spare Parts Holder Grip Cap - USED

    H&K Heckler & Koch

    $0.00
    USED factory German HK storage, spare parts holderThis part would be better termed as a thread protector holder or spare parts holder. When the thread protector needs to be removed from the barrel, for cans or muzzle attachments, the thread protector...
    HKP-00113
    $0.00
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    HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release

    HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release

    $9.95
    UMP Paddle Magazine Release - US Made New UMP Mag release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. Simple & easy to install no gunsmith needed or required. Compatible With: UMP .45 UMP ...
    HKP-18773
    $9.95
    Qty in Cart: 0
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    HK UMP/USC (.40 S&W) Extractor HK UMP/USC (.40 S&W) Extractor

    HK UMP/USC (.40 S&W) Extractor

    $39.95
    New US-Made USC Or UMP .40 Extractor This part is a repair and replacement item, as these are prone to breakage, and it's a part that's hard to find and a great item to have on hand. Please Note: HK considers this a high wear and replacement...
    HKP-02624
    $39.95
    Qty in Cart: 0
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    HKP HK 91/G3 (7.62x51/.308) Firing Pin - Titanium

    HKP HK 91/G3 (7.62x51/.308) Firing Pin - Titanium

    HKP HK Parts

    $29.95
    HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% 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 G3, 91 & PTR weapon system. Get the...
    HKP-17937
    $29.95
    Qty in Cart: 0
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  • HKP HK MR556/416 Extractor Spring Buffer HKP HK MR556/416 Extractor Spring Buffer

    HKP HK MR556/416 Extractor Spring Buffer

    HKP HK Parts

    $5.39
    HKP HK MR556/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 & HK416 Firearms
    HKP-21604
    $5.39
    Qty in Cart: 0
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    $5.39
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    HKP HK MR556/416 Titanium Firing Pin Catch

    HKP HK MR556/416 Titanium Firing Pin Catch

    HKP HK Parts

    $49.95
    HK MR556 & HK416 Firing Pin - TitaniumGrade 6 weapons grade Titanium manufacture. Made 100% 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 MR556 & HK 416 weapon system. Get the...
    HKP-17767
    $49.95
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    On Sale
    HKP HK P30 Series Titanium Firing Pin

    HKP HK P30 Series Titanium Firing Pin

    HKP HK Parts

    Now: $29.95
    Was: $49.95
    HKP HK P30 Series Titanium Firing Pin A solid billet CNC offering that's 40% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium pins also carry...
    HKP-17828
    Now: $29.95
    Was: $49.95
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    HKP HK USC (.45 ACP) Carbine Mag Release - Extended

    HKP HK USC (.45 ACP) Carbine Mag Release - Extended

    HKP HK Parts

    $24.95
    HK USC Alloy Mag Release - Extended Billeted alloy USC magazine release. This is a very common repair & replacement part as they are fairly easy to break on the USC lower. With this new metal mag release you get more surface area as well as a much...
    HKP-17918
    $24.95
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    HKP HK USP Older Style Titanium Firing Pin - Black

    HKP HK USP Older Style Titanium Firing Pin - Black

    HKP HK Parts

    $59.95
    HKP HK USP Older Style Titanium Firing Pin - Black HK stopped making or supporting the older/original style USP firing pin. In an effort, to support all of HK's customers we now offer our "enhanced" titanium firing pin to use in your original USP that...
    HKP-01287
    $59.95
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