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 - H&K 91/G3 (7.62x51/.308) Firing Pin Spring - Used - HKP-16711
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    HK91, G3 Firing Pin Spring - Used

    H&K Heckler & Koch

    $4.95
    H&K 91/G3 (7.62x51/.308) Firing Pin Spring - Used This is a common repair and replacement item. Grab one for a spare, just in case.
    HKP-16711
    $4.95
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    $4.95
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  • New - H&K 33/91/G3 Complete Triple Frame Front Sight Tower - HKP-18777 HK33, HK91, G3 Complete Triple Frame Front Sight Tower
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    HK33, HK91, G3 Complete Triple Frame Front Sight Tower

    H&K Heckler & Koch

    $29.95
    NEW HK German Front Sight Tower Triple Frame G3 triple frame in. Comes complete with sight blade and roll pin. Compatible With: HK G3 HK G3K HK 93 HK 33
    HKP-18777
    $29.95
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    $29.95
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  • New - PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - HKP-00368 HK91, G3 Tactical Handguard
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    HK91, G3 Tactical Handguard

    PTR

    $149.95
    New 2nd Generation- HK Black Matte Finish PTR, HK91, G3 Forearm  Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides,...
    HKP-00368
    $149.95
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  • New - Choate HK 91/G3 (7.62x51/.308) Folding Stock - HKP-01950 HK91, G3 Folding Stock
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    HK91, G3 Folding Stock

    Choate

    $147.95
    HK91, G3, & PTR - Folding Stock The HK Choate side folding stock is complete with a sling swivel and a new German HK backplate, ready to drop on your favorite HK rifle. No gunsmith is needed as this is an easy-to-do drop in stock. Pull the two stock...
    HKP-01950
    $147.95
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  • New - HKP (5.56/.223) & (7.62x51/.308) 4 Prong Micro Flash Hider - Threaded 15x1 RH - HKP-02189 Micro Flash Hider - 4 Prong - Threaded 15x1 RH - 5.56 / .223 - 7.62x51 / .308
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    Micro Flash Hider - 4 Prong - Threaded 15x1 RH - 5.56 / .223 - 7.62x51 / .308

    USA

    $64.95
    HKP (5.56/.223) & (7.62x51/.308) 4 Prong Micro Flash Hider - Threaded 15x1 RH New shorter "micro" version US-made 4-prong flash hider threaded 15x1 RH. Micro FH will fit all HK .223 & .308 threaded barrel applications and barrels. Made from...
    HKP-02189
    $64.95
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    $64.95
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  • New - HKP Tactical Rail - 4" - HK91/93 - HKP-02528 HK91, G3 Tactical Rail - 4"
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    HK91, G3 Tactical Rail - 4"

    HKP HK Parts

    $12.95
    HKP Tactical Rail - 4 Inch The six mounting screws are also included with each rail. This rail will fit on either the left or right side or the bottom of the PTR and HK91/93 tactical handguards. Up to three rails can be used on each forearm. Compatible...
    HKP-02528
    $12.95
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    $12.95
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  • New - H&K Standard 4 Position Burst Left Side Selector Lever - HKP-00123
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    HK MP5, MP5K Selector Lever, Left Side - Navy Trigger Groups

    H&K Heckler & Koch

    $399.95
    H&K Standard 4 Position Burst Left Side Selector Lever Compatible with any of the 0, 1, 3, F or 0, 1, 2, F trigger packs. Brand new HK German part. No longer available so get them while you can. 
    HKP-00123
    $399.95
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    $399.95
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  • New - H&K HK MR556/416 A5 Ambi Selector Lever Set Complete - Black - HKP-19375 HK416A5, MR556 Ambi Selector Lever Set Complete
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    HK416A5, MR556 Ambi Selector Lever Set Complete

    H&K Heckler & Koch

    $179.95
    H&K HK MR556/416 A5 Ambi Selector Lever Set Complete New HK German manufacture. Complete kit to upgrade the selector lever set on the MR556 to the newer HK 416A5 semi style of levers. A drop in upgrade for the MR556 & CR556. Includes: HK 416 A5...
    HKP-19375
    $179.95
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    $179.95
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  • New - MFI HK (5.56/.223) & (7.62x51/.308) G28 Style Flash Hider - Threaded 15x1 - HKP-16337 HK416, MR556, HK417, MR762 Flash Hider - G28 Style - Threaded 15x1
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    HK416, MR556, HK417, MR762 Flash Hider - G28 Style - Threaded 15x1

    MFI

    $79.95
    MFI HK G28 Style Flash Hider - Threaded 15x1 The G28, 2nd Gen flash hider is threaded 15x1 RH pitch, which is a standard HK Thread Pattern for .308 and .223 caliber weapons. It also has a deep counter bore to allow the product to cover the area behind...
    HKP-16337
    $79.95
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    $79.95
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  • New - Blitzkrieg HK MP5 Flat Front Sight Gen 2 - Luminescent Green - HKP-21102 HK MP5 Flat Front Sight - Gen 2 - Luminescent Green
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    HK MP5 Flat Front Sight - Gen 2 - Luminescent Green

    Blitzkrieg Components

    $87.95
    Blitzkrieg HK MP5 Flat Front Sight Gen 2 - Luminescent Green The Blitzkrieg Gen 2 HK-style front sight offers an advanced sighting solution with enhanced precision and visibility. Featuring a conventional flat-tipped post and a bright...
    HKP-21102
    $87.95
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    $87.95
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  • On Sale
    New - Timney Triggers HK MP5, HK 91/93/94, HK G3 2-Stage Trigger - HKP-20500 HK MP5, HK91, G3, HK93, HK94 2-Stage Trigger
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    HK MP5, HK91, G3, HK93, HK94 2-Stage Trigger

    Timney Triggers

    Now: $249.95
    Was: $298.95
    Timney Trigger for MP-5, HK 91/93/94, G3, Clones The Timney HK MP5 trigger is factory-set with a two pound first stage and a two pound second stage pull weight. All trigger parts have been expertly designed and precision machined from premium materials...
    HKP-20500
    Now: $249.95
    Was: $298.95
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    Now: $249.95
    Was: $298.95
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  • New - RCM HK G3K (7.62x51/.308) Barrel - Threaded 15x1 RH - HKP-01499
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    HK G3K Barrel - 7.62x51 / .308 - 12.69" - Threaded 15x1 RH

    RCM

    $244.95
    RCM HK G3K (7.62x51/.308) Barrel - Threaded 15x1 RH Manufactured to exact G3K specifications from cold hammer forged (CHF) steel, this barrel is a direct replacement for worn G3K barrels or ideal for your HKG3K build. It also counts as one US compliance...
    HKP-01499
    $244.95
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    $244.95
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