HK91 / G3 / HK51 Series

HK91 / G3 / HK51 Series

Discover the ultimate collection of parts for your HK G3 and HK 91, designed to enhance precision, reliability, and performance. Featuring G3 Stocks for improved ergonomics, 91 Barrels for superior accuracy, and G3 Triggers for enhanced responsiveness. Our selection also includes 91 Handguards for advanced protection and control, G3 Forearms for optimal handling, and detailed Parts Kits to fully equip your firearm for any scenario. Each component is engineered for flawless compatibility with your HK G3 or HK 91, ensuring your rifle meets the highest standards of operation and craftsmanship.

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  • Used - HKP SEF Short Axle Selector Lever For Metal Trigger Housings Only - Used - HKP-00120 HK SEF Short Axle Selector Lever For Metal Trigger Housings Only - Used
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    HK SEF Short Axle Selector Lever For Metal Trigger Housings Only - Used

    HKP HK Parts

    $9.95
    HKP SEF Short Axle Selector Lever For Metal Trigger Housings Only - Used   Compatible with all metal HK grip frames.   Please Note: The polymer (plastic) style SEF housing uses the longer axle SEF selector lever, not this product offering.
    HKP-00120
    $9.95
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  • New - HKP HK 91/G3 (7.62x51/.308) US Made Trigger Pack - 4 U.S. 922 Parts - HKP-17949 HK91, G3 US Made Trigger Pack - 4 U.S. 922 Parts
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    HK91, G3 US Made Trigger Pack - 4 U.S. 922 Parts

    HKP HK Parts

    $249.95
    HKP/H&K G3/91 (7.62x51/.308) US Made Trigger Pack - 4 U.S. 922 Parts HK G3, 91 & PTR .308 Semi Auto Trigger Pack Complete. Works with all 7.62 & .308 HK style firearms. Each trigger group incorporates the following US made compliant parts...
    HKP-17949
    $249.95
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  • Out Of Stock
    New - MM HK 33/91/93/G3 5.56/.223 & 7.62x51/.308 Clubfoot With Heavy Rubber Buttpad - HKP-01144 HK33, HK93, HK91, G3 Clubfoot Stock With Heavy Rubber Buttpad

    HK33, HK93, HK91, G3 Clubfoot Stock With Heavy Rubber Buttpad

    Michaels Machines

    $229.95
    US-Made Clubfoot (21E/23E Style) Central Buttstock Section With US Heavy Rubber Buttpad Fits all HK 91/G3/21/23 and HK93/33/53 backplates and buffers. Just add your buffer and backplate and you are good to go. Great replacement or upgrade for your HK...
    HKP-01144
    $229.95
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    $229.95
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  • New - HKP Ambi Housing Franklin Armory Binary Selector Set - HKP-19816 HK Binary Selector Set - Ambi Housing
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    HK Binary Selector Set - Ambi Housing

    HKP HK Parts

    $79.95
    Aluminum HK Selector Lever Set for BFSIII HK Binary Trigger Pack - Ambi pictogram housings Our new Aluminum Selector Lever Set was modeled after the HK Ambi Style Selector Lever. Designed to work  flawlessly with  Franklin Armory Trigger Pack...
    HKP-19816
    $79.95
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  • Used - H&K HK G3/HK 91/PTR Parts Kit - PTR Barrel, Flat - Hand Picked - HKP-20071
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    HK91, G3 Parts Kit- Hand Picked - PTR Barrel and Receiver Flat

    H&K Heckler & Koch

    $879.95
    G3, 91 Hand Picked Parts Kit - PTR Barrel and Receiver Flat Features: Handpicked stock set Handpicked housing, grip Handpicked magazine Handpicked end date coded bolt group New cocking tube included Full-auto bolt group PTR 18" GI barrel - 5/8 x...
    HKP-20071
    $879.95
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  • New - H&K 91/G3 (7.62x51/.308) Mag Release Set - HKP-00929 HK91, G3 Mag Release Set
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    HK91, G3 Mag Release Set

    H&K Heckler & Koch

    $34.95
    Heckler and Koch Magazine Release Set (Left to Right) for HK91, G3 This magazine catch set consists of 4 pieces and is HK-manufactured. Includes: Magazine Catch Magazine Catch Spring Push Button Clamping Sleeve to retain Push Button Compatible...
    HKP-00929
    $34.95
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  • New - MKE PTR PDW Retractable Stock - HKP-21376 HK51, PTR PDW Retractable Stock - A3
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    HK51, PTR PDW Retractable Stock - A3

    MKE

    $459.95
    MKE HK51, PTR PDW Retractable Stock A3 Factory new MKE stock professionally converted to fit HK51 and PTR PDW rifles and pistols. This stock was modified with a heavy profile collapsing rod insert heat treated for longevity. The correct collapsing length...
    HKP-21376
    $459.95
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  • Used - H&K 91/G3 (7.62x51/.308) Cocking Handle - All Metal - Surplus - HKP-16766 HK91, G3 Cocking Handle - All Metal - Surplus
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    HK91, G3 Cocking Handle - All Metal - Surplus

    H&K Heckler & Koch

    $8.49
    HK German HK G3 & HK 91 Older Style All Metal Cocking Handle Used German Military Surplus. No longer made or offered by HK. A genuine Heckler and Koch part. All steel cocking handle. Rare and hard to find. Compatible With: HK 91, G3, HK51 HK PSG1,...
    HKP-16766
    $8.49
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  • New - HKP 90 Series Sear - HKP-00378 HK90, MP5K Sear Catch - Steel - US
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    HK90, MP5K Sear Catch - Steel - US

    HKP HK Parts

    $47.95
    HKP HK Parts HK90, HK MP5K Sear Catch - Steel - USA Made - Billeted Machined - Steel Hard to find and important for keeping your HK build 922r compliant. This US-made sear counts as one US-compliant part for your rifle or build. Machined from a bar of...
    HKP-00378
    $47.95
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  • New - HKP HK 91 Polymer To Metal Trigger Group Conversion Kit - HKP-17362 HK91 Polymer To Metal Trigger Group Conversion Kit
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    HK91 Polymer To Metal Trigger Group Conversion Kit

    HKP HK Parts

    $225.95
    HK 91/PTR 91 Polymer To Metal Trigger Group Conversion Kit. This is everything you will need to convert the lower trigger group on your HK 91 from polymer to metal housing with contoured grip. Just use your existing trigger pack to complete the...
    HKP-17362
    $225.95
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  • New - H&K Roller Sear For SEF, Navy Trigger Packs - HKP-01710 HK Roller Sear For SEF, Navy Trigger Packs
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    HK Roller Sear For SEF, Navy Trigger Packs

    H&K Heckler & Koch

    $29.95
    H&K Roller Sear For SEF & Navy Trigger Packs It is the newer style, not the older friction type of sear. This item is also referred to as the catch with a roller but is more commonly called a sear.
    HKP-01710
    $29.95
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  • Used - H&K Standard Roller 8.00mm - Used - HKP-19374 HK Standard Roller 8.00mm - Used
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    HK Standard Roller 8.00mm - Used

    H&K Heckler & Koch

    $7.95
    8.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt Head HK spec unmarked 8.00mm roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. The best roller on the market...
    HKP-19374
    $7.95
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