Bolt Carrier Groups

Bolt Carrier Groups

Discover top-quality Heckler and Koch bolt carrier groups at HK Parts, including the HK MP5 bolt carrier, HK G3 bolt carrier, and HK93 bolt carrier. Explore our selection of full auto bolt carriers, enhanced bolt carriers, and tungsten-filled bolt carriers for models like the HK416, HK91, and HK MR556. Ensure reliability with factory HK bolt carriers and US-made bolt carriers. Shop now for chrome-lined bolt carriers, firing pin assemblies, and complete bolt heads to maintain 922r compliance and superior performance.

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    New - H&K HK21 (7.62x51/.308) Locking Piece - HKP-01745

    HK21 Locking Piece - 7.62x51/.308

    H&K Heckler & Koch

    Now: $134.95
    Was: $149.95
    H&K HK21 (7.62x51/.308) Locking Piece - New Factory, Old Stock The HK21 standard 50-degree locking piece. Each LP includes the hardness "dot" to identify them as HK 21 locking pieces.
    Now: $134.95
    Was: $149.95
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    Now: $134.95
    Was: $149.95
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    HK MP5K Recoil Rod Assembly HK MP5K Recoil Rod Assembly
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    HK MP5K Recoil Rod Assembly

    RCM

    Now: $49.46
    Was: $54.95
    RCM HK MP5K Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5K NOT compatible with SP5K with the F-style recoil rod MP5K clones and...
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    Was: $54.95
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    HK MP5 Recoil Rod Assembly HK MP5 Recoil Rod Assembly

    HK MP5 Recoil Rod Assembly

    RCM

    Now: $49.46
    Was: $54.95
    RCM HK MP5 Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5 NOT compatible with SP5 with the F-style recoil rod MP5 clones and custom...
    Now: $49.46
    Was: $54.95
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    Was: $54.95
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    New - H&K MP5K 9mm Complete Bolt Group - Suppressed - HKP-21613 HK MP5, MP5K Bolt Group - Complete - 9mm - Suppressed
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    HK MP5, MP5K Bolt Group - Complete - 9mm - Suppressed

    H&K Heckler & Koch

    Now: $2,676.60
    Was: $2,974.00
    H&K MP5K 9mm Complete Bolt Group - Suppressed   Introducing an incredible opportunity: a fully assembled Factory German F/A MP5K bolt group, showcasing the highly coveted 80 degree #28 German locking piece. This is the definitive drop-in...
    Now: $2,676.60
    Was: $2,974.00
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    Now: $2,676.60
    Was: $2,974.00
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    New - Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete - HKP-20626 Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete
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    Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete

    Now: $584.96
    Was: $649.95
    Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete MM’s UMP tungsten filled UMP .40 bolt carrier. Heat treated, parkarized and polished for the best look and function possible, as an added bonus it now includes German HK internals which...
    Now: $584.96
    Was: $649.95
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    Was: $649.95
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    New - H&K USC (.45 ACP) Bolt Group- Incomplete - HKP-17011 HK USC (.45 ACP) Bolt Group- Incomplete
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    HK USC (.45 ACP) Bolt Group- Incomplete

    H&K Heckler & Koch

    Now: $629.96
    Was: $699.95
    HK German USC .45 Factory Semi Bolt - Incomplete HK German USC, Omega GS 45 caliber bolt carrier that is stripped. Just add the firing pin, firing pin spring, extractor and firing pin retaining pin for a complete bolt. Made in Germany.
    Now: $629.96
    Was: $699.95
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    Was: $699.95
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    New - HKP HK MR556/416 Extractor - BLEMISHED - HKP-21826-B HK416, MR556 Extractor - BLEMISHED
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    HK416, MR556 Extractor - BLEMISHED

    HKP HK Parts

    Now: $18.71
    Was: $39.95
    HKP HK MR556/416 Extractor - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HKP HK MR556/416 extractor is a precision-engineered component designed...
    Now: $18.71
    Was: $39.95
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    New - Michaels Machines HK21E/PSG1/MSG90 Extractor - HKP-21632 HK21E, HK23E, PSG1, PTR Extractor

    HK21E, HK23E, PSG1, PTR Extractor

    Michaels Machines

    Now: $248.35
    Was: $275.95
    Michaels Machines HK21E, HK23E, PSG1, MSG90 Extractor Replacement extractor for HK21E, HK23E, PSG1, and MSG90 bolt heads. Extractors are a known wear item on these platforms and are no longer produced by HK. The Michaels Machines extractor is a precise,...
    Now: $248.35
    Was: $275.95
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    Was: $275.95
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    New - Michaels Machines HK USC/UMP 9mm Semi Auto Bolt Carrier - Incomplete - HKP-19871 HK USC, UMP Bolt Carrier - Semi- Auto - 9mm - Incomplete

    HK USC, UMP Bolt Carrier - Semi- Auto - 9mm - Incomplete

    Michaels Machines

    Now: $449.95
    Was: $499.95
    HK UMP 9mm - Semi-Auto Bolt Stripped The semi-auto bolt is required for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Features: Tungsten filled Heat treated Parkerized & polished Marked 9X19mm just...
    Now: $449.95
    Was: $499.95
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    Now: $449.95
    Was: $499.95
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    New - HK G41 Firing Pin Spring - HKP-16060
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    HK G41 Spring - Firing Pin

    H&K Heckler & Koch

    Now: $8.96
    Was: $9.95
    HK G41 Firing Pin Spring Compatible With: HK G41
    Now: $8.96
    Was: $9.95
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  • Out Of Stock
    New - H&K HK MR556 Complete Bolt Head - HKP-02712 HK416, MR556A1 Bolt Head - Complete

    HK416, MR556A1 Bolt Head - Complete

    H&K Heckler & Koch

    $0.00
    H&K HK MR556 A1 Complete Bolt Head Brand new factory German bolt head with all the components to make the bolt head complete. Compatible With: HK MR556 A1
    $0.00
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    New - H&K G36/SL8 (5.56/.223) Bolt Hold Open Catch - HKP-16378 HK G36, SL8 Bolt Catch - Bolt Hold Open
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    HK G36, SL8 Bolt Catch - Bolt Hold Open

    H&K Heckler & Koch

    Now: $53.96
    Was: $59.95
    H&K G36/SL8 (5.56/.223) Bolt Hold Open Catch New HK German manufacture. Compatible With: SL8-1 SL8-6
    Now: $53.96
    Was: $59.95
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    Was: $59.95
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