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 Burst Trigger Pack Compression Rod Spring - HKP-16199
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    HK90 Series Compression Spring for Shifter Rod on Burst Trigger Packs

    H&K Heckler & Koch

    $10.95
    H&K Burst Trigger Pack Compression Rod Spring Burst pack compression spring for compression rod found in all HK Burst Trigger Packs. This part, along with the compression rod, is the number one most common wear or breakage parts in HK Burst Packs...
    $10.95
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  • New - H&K 10 Round HK USP .45 ACP Extended Floor Plate - Black - HKP-01281 HK USP Magazine Floorplate - .45 ACP - 10 Round - Extended
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    HK USP Magazine Floorplate - .45 ACP - 10 Round - Extended

    H&K Heckler & Koch

    $12.95
    H&K 10 Round HK USP .45 ACP Extended Floor Plate This is a great part to stock up on as the 10-round tabs are known for breakage, or if you have large hands, the extended floorplate is a must-have upgrade.  Compatible With: HK USP .45 Magazine...
    $12.95
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  • New - German HK 416, MR556 - Barrel Nut - HKP-02535 HK416 A1, MR556 Barrel Nut
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    HK416 A1, MR556 Barrel Nut

    H&K Heckler & Koch

    $53.95
    Heckler and Koch Barrel nut for MR556A1 rifle All steel barrel nut. This item is a must-have repair and replacement part for removal or when you have any work done to your barrel, as the barrel nut may become damaged in the removal and...
    $53.95
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  • Used - H&K German Hammer Spring (5.56/.223 & 7.62x51/.308) - Used - HKP-18066
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    HK German Hammer Spring (5.56/.223 & 7.62x51/.308) - Used

    H&K Heckler & Koch

    $4.95
    HK German Rifle Hammer Spring For All .308 & .223 Semi & Full Auto Trigger Packs The rifle 308/5.56 hammer spring is a popular upgrade in 9mm builds experiencing light primer hits. This is the factory correct 25 lb. weight for positive detonation...
    $4.95
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  • New - H&K HK VP9B Mag Release Button Set - S, L, XL - HKP-19746 HK VP9B Mag Release Button Set - S, L, XL
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    HK VP9B Mag Release Button Set - S, L, XL

    H&K Heckler & Koch

    $9.95
    HK VP9B Mag Release Button  - S, L & XL New HK German Manufacture. Will fit the new VP9B button mag release model. A perfect way to customize your mag release fitment. Compatible With: VP9B and VP9LB models only NOT compatible with VP9A1 F,...
    $9.95
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  • New - GSG9 HK G36/SL8 (5.56/.223) Forearm, Lower, Magwell - Push Pin - HKP-18221
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    HK G36, SL8 Locking Push Pin for Handguards, Lowers, Magwells

    GSG9

    $18.95
    HK G36, SL8 Push Pin For Forearm, Magwell, & Lower  Each push pin/locking pin retains the forearm, magwell, & lower to the upper receiver. Each G36 style firearm uses a total of 3X of these push pins. Compatible With: G36 G36K G36C G36...
    $18.95
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  • New - H&K HK USP Full Size 9mm/.40 S&W Extractor - HKP-00324 HK USP Extractor - Full Size - 9mm / .40 S&W
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    HK USP Extractor - Full Size - 9mm / .40 S&W

    H&K Heckler & Koch

    $54.95
    H&K HK USP Full Size 9mm/.40 S&W Extractor New HK German. A great spare & replacement item for your USP 9mm or USP .40 pistol. Compatible With: HK USP 9mm HK USP 40 S&W HK USP Tactical, Expert, Elite
    $54.95
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  • Out Of Stock
    New - HK Rifle Tac Latch - HK 91, G3, HK 93, 33 - HKP-02791 HK33, G3 Rifle Tac Latch

    HK33, G3 Rifle Tac Latch

    $69.95
    HK Rifle Tac Latch For HK 91, G3, HK 93, & 33 HK's were designed to have a quick one-handed release capability for the magazine (paddle mag release). However, the semi-auto versions eliminated this much-needed feature due to import restrictions...
    $69.95
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  • New - HK G36/SL8 (5.56/.223) Factory Recoil Buffer - HKP-18541
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    HK G36, SL8 Recoil Buffer - Factory - US

    USA

    $16.95
    HK G36 Or SL8 Factory Recoil Buffer A must have spare part as the buffer is prone to wear and breakage. Compatible With: All HK G36 models SL8 models Clones
    $16.95
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  • New - H&K Elbow Spring Spacer For Full-Auto - HKP-03330 HK MP5SF Bushing Sleeve - Elbow Spring
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    HK MP5SF Bushing Sleeve - Elbow Spring

    H&K Heckler & Koch

    $5.95
    Heckler and Koch replacement distance sleeve for MP5SF elbow spring with roller - Used Features: Precision-machined elbow spring and roller used in traditional roller-delayed trigger packs. Original HK design ensures perfect trigger geometry, smooth...
    $5.95
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  • New - H&K 8 Round HK USPC/45C .45 ACP Floorplate w/ Pinky Rest - Black - HKP-01199 HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Pinky Rest
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    HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Pinky Rest

    H&K Heckler & Koch

    $12.95
    H&K 8 Round HK USPC/45C .45 ACP Floorplate w/ Pinky Res HK factory German, vintage style, all polymer 8 round magazine floor plate with finger rest. This floorplate can become cracked and worn with use and is a great spare part to have on hand. Made...
    $12.95
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  • New - H&K HK USP Left Side V3 Decocking Lever - HKP-01168
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    HK USP Left Side V3 Decocking Lever

    H&K Heckler & Koch

    $59.95
    H&K HK USP Left Side V3 Decocking Lever V3 decock only lever for right-handed operation. German HK V3 lever for full-size USP's. When used along with the V3 - V4 detent plate, it will convert to decock only - no safety. For use with right-handed...
    $59.95
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