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 HK MR556/416 Bolt Carrier - HKP-02718 HK416, MR556 Bolt Carrier
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    HK416, MR556 Bolt Carrier

    H&K Heckler & Koch

    $397.95
    H&K HK MR556/416 Factory Bolt Carrier With The Newer Style Bolt Retaining Key  This is the factory one-piece carrier that has the out-of-battery disconnect and the bolt retaining latch assemblies installed to make up the HK MR556 (556...
    HKP-02718
    $397.95
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  • New - HK G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring - HKP-18373 HK MP7, G36, Bolt O-Ring - Firing Pin - US
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    HK MP7, G36, Bolt O-Ring - Firing Pin - US

    USA

    $5.95
    HK G36 & MP7 Firing Pin Bolt O-ring. This is also the O-ring for the retaining pin for the MP7- US. Compatible With: HK G36 HK MP7
    HKP-18373
    $5.95
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    $5.95
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  • Out Of Stock
    New - PTR HK G3/91 (7.62x51/.308) Locking Piece- 45 Degree - HKP-18518 HK91, G3 Locking Piece - 45 Degree

    HK91, G3 Locking Piece - 45 Degree

    PTR

    $21.95
    45 Degree Locking Piece - US Made PTR standard 45 degree locking piece made in the USA by PTR and is design to be a direct replacement for all .308 HK style firearms. Compatible With: G3 PTR 91 HK 91 Other costume clones
    HKP-18518
    $21.95
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    $21.95
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  • New - HKP HK MR556/416 Extractor Spring Buffer - HKP-21604 HK416, MR556 Extractor Spring Buffer
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    HK416, MR556 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
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  • New - H&K HK G36/SL8 Complete Recoil Rod Assembly - HKP-01057
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    HK G36, SL8 Recoil Spring Assembly, Complete

    H&K Heckler & Koch

    $69.95
    Recoil Rod Assembly for HK G36 & SL8 New HK factory German G36/SL8 (fits all variants of SL8/G36) recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find.
    HKP-01057
    $69.95
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  • New - HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel - HKP-17798
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    HK33, HK53, HK93 Firing Pin - Stainless Steel

    HKP HK Parts

    $24.95
    HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33
    HKP-17798
    $24.95
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  • New - RCM MP5 40/10 High Impulse Locking Piece #25 - HKP-15149
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    HK MP5 Locking Piece #25 - 60 Degree - High Impulse - .40 S&W, 10mm - USA

    RCM

    $44.95
    MP5 40 & MP5 10mm High Impulse Locking Piece Marked #25 Made in the US from an enhanced material and heat treated to factory specifications. Each US-made MP5 40/10 60-Degree Locking Piece is used for high-impulse ammo commonly found in...
    HKP-15149
    $44.95
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  • New - H&K G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring - HKP-01858
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    HK MP7, G36 Firing Pin Bolt O-Ring

    H&K Heckler & Koch

    $9.95
    HK G36 & MP7 Firing Pin - Bolt O-Ring   Compatible With: HK G36 HK MP7  
    HKP-01858
    $9.95
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  • Out Of Stock
    New - H&K -2 Roller For Bolt Head 7.98mm - Under-sized - HKP-00505 HK -2 Roller For Bolt Head 7.98mm - Under-sized

    HK -2 Roller For Bolt Head 7.98mm - Under-sized

    H&K Heckler & Koch

    $19.95
    H&K -2 Roller For Bolt Head 7.98mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -2 roller. Please Note: The price listed is per roller. Order 2 (pair) for...
    HKP-00505
    $19.95
    Out Of Stock
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    $19.95
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  • New - HK G36/SL8 (5.56/.223) Bolt Group Fork - HKP-18774
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    HK G36, SL8 Bolt Group Fork

    USA

    $10.95
    G36 & Sl8 Bolt Group Fork For Cocking Handle - US 
    HKP-18774
    $10.95
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  • New - H&K MP5 40/10 Extractor - HKP-00410 HK MP5 Extractor - .40 S&W, 10mm, .357 SIG
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    HK MP5 Extractor - .40 S&W, 10mm, .357 SIG

    H&K Heckler & Koch

    $69.95
    H&K Heckler and Koch New Latest Production 1.4mm Extractor for HK MP5 .40, 10mm, .357  This is the latest and greatest upgraded extractor made by HK. This is also a great upgrade for the many out-of-spec clones out there. Compatible...
    HKP-00410
    $69.95
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  • New - HKP MP5 40/10 Bolt Hold Open Weldment Set Complete - HKP-17648
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    HK MP5 Weldment Set - .40 S&W, 10mm

    HKP HK Parts

    $189.95
    HKP MP5 40/10 Bolt Hold Open Weldment Set Complete Not offered or available anywhere else. This is the correct weldment set for the MP5 40/10 BHO components. 
    HKP-17648
    $189.95
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