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 - HK G36/SL8 (5.56/.223) Bolt Heads Ejector - HKP-18371 HK G36, SL8 Bolt Head Ejector - USA
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    HK G36, SL8 Bolt Head Ejector - USA

    $13.95
    HK G36/SL8 Ejector For All G36, SL8 bolts -US Made
    HKP-18371
    $13.95
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  • Out Of Stock
    Used - FMP HK 91/G3 (7.62x51/.308) Complete Bolt Head - HK Contract FMP - Used - HKP-17628 HK91, G3 Complete Bolt Head - HK Contract FMP - Used

    HK91, G3 Complete Bolt Head - HK Contract FMP - Used

    H&K Heckler & Koch

    $59.95
    HK CONTRACT FMP - HK G3 & HK 91 & PTR Bolt Head Complete Made on HK tooling & prints in Portugal in the 1980's. Each used bolt head is complete with all parts installed & 100% functional. Removed from de-milled FMP HK G3 rifles. Each bolt...
    HKP-17628
    $59.95
    Out Of Stock
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    $59.95
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  • Out Of Stock
    New - H&K MP5 40/10 +2 Roller - HKP-00334 HK MP5 Locking Roller +2 - .40 S&W, 10mm

    HK MP5 Locking Roller +2 - .40 S&W, 10mm

    H&K Heckler & Koch

    $19.99
    H&K Heckler and Koch +2 Roller for HK MP5 40,10  New HK German MP5 40,10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.  Please Note: The price...
    HKP-00334
    $19.99
    Out Of Stock
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    $19.99
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  • On Sale
    New - HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - Gunsmith Special - BLEMISHED - HKP-18273-B HK MP5, MP5K Locking Piece - 100 Degree - Extra Low Impulse - .40 S&W, 10mm - Gunsmith Special - BLEMISHED
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    HK MP5, MP5K Locking Piece - 100 Degree - Extra Low Impulse - .40 S&W, 10mm - Gunsmith Special - BLEMISHED

    HKP HK Parts

    Now: $9.95
    Was: $49.95
    HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - Gunsmith Special - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Please Note: Will require work...
    HKP-18273-B
    Now: $9.95
    Was: $49.95
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    Now: $9.95
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  • Out Of Stock
    New - B&T TP9/MP9 Firing Pin - Black - HKP-17297

    B&T TP9, MP9 Firing Pin

    B&T Brugger & Thomet

    $44.95
    B&T Firing Pin For B&T TP9, MP9 Genuine Swiss Brugger and Thomet firing pin for the TP9 and MP9 platforms. Compatible With: B&T TP9 B&T MP9
    HKP-17297
    $44.95
    Out Of Stock
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    $44.95
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  • New - H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin - HKP-02469 HK G36, SL8 Firing Pin Retaining Pin
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    HK G36, SL8 Firing Pin Retaining Pin

    H&K Heckler & Koch

    $10.95
    H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin Compatible With: HK G36 HK SL8
    HKP-02469
    $10.95
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    $10.95
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  • New - H&K HK MR556/MR762/417 Index Pin Spring - HKP-17021
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    HK417, MR556, MR762 Index Pin Spring

    H&K Heckler & Koch

    $7.95
    H&K HK MR556/MR762/417 Index Pin Spring   Compatible With: HK MR556 HK 417 HK MR762  
    HKP-17021
    $7.95
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    $7.95
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  • New - H&K 23E/13E Factory German Firing Pin - HKP-00820
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    HK23E, HK13E Firing Pin

    H&K Heckler & Koch

    $109.95
    H&K 23E/13E (5.56/.223) Factory German Firing Pin New HK23E & HK13E factory German firing pin. These firing pins are no longer in production from HK.  We have a limited number available and once they are gone, they are gone for good...
    HKP-00820
    $109.95
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    $109.95
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  • Out Of Stock
    New - PTR 32 (7.62x39) Complete Bolt Head - US Made - HKP-02280 PTR 32 Complete Bolt Head - 7.62x39 - US Made

    PTR 32 Complete Bolt Head - 7.62x39 - US Made

    $199.95
    PTR 32 (7.62x39) Complete Bolt Head - US Made This item is a complete bolt head using a combination of new HK German and new US-made Parts. Bolt Head counts as one US-made compliance part for the 922r compliance. Compatible With: All HK PTR-32 7.62 X...
    HKP-02280
    $199.95
    Out Of Stock
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    $199.95
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  • New - RCM MP5 40/10 Low Impulse Locking Piece #24 - HKP-15148 HK MP5 Locking Piece #24 - 90 Degree - Low Impulse - .40 S&W, 10mm - US
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    HK MP5 Locking Piece #24 - 90 Degree - Low Impulse - .40 S&W, 10mm - US

    RCM

    $44.95
    RCM MP5 40/10 Low Impulse Locking Piece #24 Made out of enhanced material and heat treated to spec. The # 24 is the 90-degree locking piece. This is also the standard non-high impulse ammo locking piece.  Compatible With:  MP5...
    HKP-15148
    $44.95
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  • New - H&K G36/SL8 (5.56/.223) Bolt Catch Spring - HKP-01861
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    HK G36, SL8 Bolt Catch Spring

    H&K Heckler & Koch

    $9.95
    HK German G36 & SL8 Bolt Catch Spring  
    HKP-01861
    $9.95
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  • New - PTR-32 (7.62x39) Locking Piece - 70 degree - HKP-18519 PTR-32 Locking Piece - 70 degree
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    PTR-32 Locking Piece - 70 degree

    PTR

    $63.95
    PTR-32 (7.62x39) Locking Piece - 70 degree New PTR Locking Piece For PTR-32. Marked "70" for the PTR-32 series of rifles and pistols. This is a 70 degree locking piece. New PTR manufacture. This locking piece will also work for custom HK builds as well.
    HKP-18519
    $63.95
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    $63.95
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