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 PSG1/MSG90 (7.62x51/.308) Ejector Lever - HKP-00537 HK PSG1, MSG90 Ejector Lever
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    HK PSG1, MSG90 Ejector Lever

    H&K Heckler & Koch

    $79.95
    Heckler and Koch Ejector Lever for HK PSG1, MSG90 German-made ejector lever for PSG1 and MSG90 platforms. Direct replacement part built to original factory-spec for reliable extraction and correct bolt head function. Compatible With: PSG1, MSG90
    HKP-00537
    $79.95
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    $79.95
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  • New - HKP MP5SD 40/10 110 Degree Locking Piece - HKP-18274 HK MP5SD 110 Degree Locking Piece
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    HK MP5SD 110 Degree Locking Piece

    HKP HK Parts

    $49.95
    MP5 40 & MP5 10mm SD 110 Degree Locking Piece - USA Made in the USA from an enhanced material and heat treated to factory specifications. Each US made MP5 40/10 SD 110 degree locking price is designed for use with the MP5 40/10 SD variants...
    HKP-18274
    $49.95
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    $49.95
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  • New - HKP MP5 40/10 Full Auto Bolt Carrier - HKP-18363 HK MP5 Bolt Carrier - Full Auto - 10mm / .40 S&W - USA
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    HK MP5 Bolt Carrier - Full Auto - 10mm / .40 S&W - USA

    HKP HK Parts

    $149.95
    HKP MP5 40/10 Full Auto Bolt Carrier Machined completely from billet ordnance steel and black oxide finished. This carrier is made to the latest specs, tungsten filled, and heat treated.  Made in the USA and available exclusively at HK Parts...
    HKP-18363
    $149.95
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    $149.95
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  • New - H&K MP5K 9mm Complete Full Auto Bolt Group - HKP-00384 HK MP5K Bolt Group - Complete - Full Auto - 9mm
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    HK MP5K Bolt Group - Complete - Full Auto - 9mm

    H&K Heckler & Koch

    $2,974.95
    MP5K Full Auto Bolt Group "F" Style Complete - German Each factory HK MP5K bolt group includes the following: MP5K F/A - F style bolt carrier F style bolt head 100 degree locking piece firing pin firing pin spring recoil rod assembly Extremely rare...
    HKP-00384
    $2,974.95
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    $2,974.95
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  • On Sale
    HK91, HK G3 Locking Piece - USED H&K Heckler & Koch HKP-16712-USED HK91, HK G3 Locking Piece - USED H&K Heckler & Koch HKP-16712-USED
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    FMP Locking Piece - USED

    H&K Heckler & Koch

    Now: $8.93
    Was: $14.95
    FMP Locking Piece - USED SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German Locking Piece For FMP - USED. This is the factory correct for FMP firearms. Used pulled from...
    HKP-16712-USED
    Now: $8.93
    Was: $14.95
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    Now: $8.93
    Was: $14.95
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  • On Sale
    New - Omega HK UMP .45 Semi Auto Bolt Carrier - Complete - HKP-21316 HK UMP Bolt Carrier - Semi-Auto - Complete - .45 S&W
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    HK UMP Bolt Carrier - Semi-Auto - Complete - .45 S&W

    OMEGA

    Now: $224.95
    Was: $359.95
    Omega HK UMP .45 Bolt Carrier Complete - Semi Auto Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Compatible With: HK UMP .45 Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin The...
    HKP-21316
    Now: $224.95
    Was: $359.95
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    Now: $224.95
    Was: $359.95
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  • On Sale
    Used - FMP HK 21 Stripped Bolt Carrier - HKP-20034 HK21 Bolt Carrier - Stripped - Incomplete
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    HK21 Bolt Carrier - Stripped - Incomplete

    FMP HK CONTRACT

    Now: $387.95
    Was: $499.95
    FMP HK 21 Stripped Bolt Carrier New old stock stripped HK21 FMP Full auto bolt carrier. Missing the catch lever assembly (see pictures). May have storage marks or light rust on the unfinished bottom portion. Long since out of production and no longer...
    HKP-20034
    Now: $387.95
    Was: $499.95
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    Now: $387.95
    Was: $499.95
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  • Out Of Stock
    New - H&K HK G36/SL8 Extractor Rubber Pin - HKP-02162

    HK G36, SL8 Extractor Rubber Pin

    H&K Heckler & Koch

    $0.00
    HK G36 & SL8 Extractor Rubber Pin
    HKP-02162
    $0.00
    Out Of Stock
    Qty in Cart: 0
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    $0.00
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  • Out Of Stock
    New - GSG9 HK G36 (5.56/.223) Complete Bolt Head - HKP-18983 HK G36 Bolt Head - Complete

    HK G36 Bolt Head - Complete

    GSG9

    $0.00
    G36 Bolt Head - Complete - USA G36 Bolt Head allows the use of double stack magazines in your SL8 conversion to high capacity G36, Magpul or AR15 Magazines. Perfect for the G36 conversions or for a spare part to have on hand. Made in the USA from 9310,...
    HKP-18983
    $0.00
    Out Of Stock
    Qty in Cart: 0
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    $0.00
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  • Out Of Stock
    New - HKP PTR PDW (7.62x51/.308) Complete Bolt Group - HKP-17389 HK PTR PDW Bolt Group - Complete

    HK PTR PDW Bolt Group - Complete

    HKP HK Parts

    $379.95
    US Made PTR Bolt Group Complete Semi-Auto 308. Factory correct bolt head and locking piece for use in the PTR PDW chambered in 7.62X51 or 308. Brand new May 2015 manufacture. This is the correct bolt for all PTR PDW with 8" barrels.
    HKP-17389
    $379.95
    Out Of Stock
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    $379.95
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  • New - HK 91/G3 (7.62x51/.308) Bolt Head - Stripped - HKP-16636 HK91, G3 Bolt Head - Stripped
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    HK91, G3 Bolt Head - Stripped

    $96.95
    New US Made Bolt Head- Incomplete: CNC machined from HK blueprints to precise tolerances that use the proper steel and heat-treat processes. You WILL NOT find a better quality offering of HK Parts anywhere. All of the bolt heads we offer on our website...
    HKP-16636
    $96.95
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    $96.95
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  • New - HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - HKP-18273 HK MP5, MP5K 40/10 Locking Piece - Extra Low Impulse
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    HK MP5, MP5K 40/10 Locking Piece - Extra Low Impulse

    HKP HK Parts

    $49.95
    HKP MP5/K 40/10 Locking Piece - Extra Low Impulse Marked 100 Degree For the MP5 40 or 10mm Firearms. Made out of enhanced material and heat-treated to spec. The #100 degree locking piece is an extra low impulse 40/10 locking piece. To be used with MP5...
    HKP-18273
    $49.95
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    $49.95
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