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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  • On Sale
    HK MP5, 90 Series, AP5 Sear - Friction - SEF and Navy Trigger Packs HK MP5, 90 Series, AP5 Sear - Friction - SEF and Navy Trigger Packs
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    HK MP5, 90 Series, AP5 Sear - Friction - SEF and Navy Trigger Packs

    MKE

    Now: $4.95
    Was: $8.95
    MKE AP5, MP5, 90 Series Friction Sear for SEF and Navy Trigger Packs Steel friction sear manufactured in Turkey for HK 90 Series trigger packs. Designed for use in SEF and Navy-style configurations, this component is commonly referred to as the catch...
    HKP-22521
    Now: $4.95
    Was: $8.95
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  • New - H&K HK MP5/91/93/53/33/G3 Sear/Catch - HKP-01459
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    HK91, G3, MP5 Sear Catch - Steel - New Build

    H&K Heckler & Koch

    $69.95
    Heckler & Koch's Sear Catch Release - Complete For HK 90 Series Trigger Packs New HK German manufacture. Sear/Catch complete with installed detent, spring, and roll pin. Compatible With: HK MP5, HK MP5K HK91 HK G3 HK33, HK53, HK93 PTR Other 90...
    HKP-01459
    $69.95
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  • New - Picatinny to Harris Bipod Adapter - HKP-00909 Harris Bipod Adapter - Long - Picatinny
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    Harris Bipod Adapter - Long - Picatinny

    HKP HK Parts

    $34.95
    Harris Bipod Adapter  This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-style bipod. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and steel.
    HKP-00909
    $34.95
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  • Used - G3 A2 Adjustable Stock Extension - HKP-00872 G3 A2 Adjustable Stock Extension USA HKP-00872
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    HK G3 A2 Adjustable Stock Extension

    USA

    $69.95
    HK G3 A2 Adjustable Stock Extension Each stock extension is adjustable in 1/2" increments to enable you to achieve the proper length of trigger pull. This allows you a full 1.50" in length adjustments. These extensions are manufactured using high-impact,...
    HKP-00872
    $69.95
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  • On Sale
    Used - HK G3 .22 20 Round Conversion Magazine - BLEMISHED - HKP-20750-B HK91, G3 Conversion Magazine - .22LR - 20 Round - BLEMISHED
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    HK91, G3 Conversion Magazine - .22LR - 20 Round - BLEMISHED

    H&K Heckler & Koch

    Now: $149.95
    Was: $199.95
    H&K Heckler & Koch's Conversion Magazine for HK91, G3 - Conversion Kit - 20 Round - BLEMISHED CONDITION MAY VARY. DENTS VISIBLE BUT MAGAZINES ARE STILL FUNCTIONAL. REFER TO PHOTOS TO ASCERTAIN CONDITION. Priced for ONE Conversion Magazine -...
    HKP-20750-B
    Now: $149.95
    Was: $199.95
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  • On Sale
    Used - H&K (7.62/.308) & (5.56/.223) Flash Hider - USED - BLEMISHED - HKP-00717-B HK33, HK53, HK93, HK91, G3 Flash Hider - Threaded 15x1 RH - USED - BLEMISHED
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    HK33, HK53, HK93, HK91, G3 Flash Hider - Threaded 15x1 RH - USED - BLEMISHED

    H&K Heckler & Koch

    Now: $7.95
    Was: $15.95
    Heckler and Koch Flash Hider for (7.62/.308) & (5.56/.223) - 15x1 RH - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Used surplus HK German...
    HKP-00717-B
    Now: $7.95
    Was: $15.95
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  • Used - H&K HK91/G3 PTR Parkerized Backplate & Recoil Rod Assembly - Threaded - HKP-21647 HK91, G3 PTR ,Recoil Rod Assembly, Backplate - Painted
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    HK91, G3 PTR ,Recoil Rod Assembly, Backplate - Painted

    H&K Heckler & Koch

    $54.95
    H&K HK91/G3 PTR & Recoil Rod Assembly-Backplate-Painted Our German HK backplate has been expertly refinished and Painted for exceptional durability. This backplate features an innovative guide screw that allows you to effortlessly replace worn...
    HKP-21647
    $54.95
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  • New - HKP SEF Skeletonized Franklin Armory Binary Aluminum Selectors - For Left Hand Shooters - HKP-20527 HK SEF Skeletonized Binary Aluminum Selectors - For Left Hand Shooters
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    HK SEF Skeletonized Binary Aluminum Selectors - For Left Hand Shooters

    HKP HK Parts

    $69.95
    HK Selector Lever Set for BFSIII HK Binary Trigger Pack - SEF Grip Frames - Aluminum Skeletonized SEF skeletonized style selector lever set modeled after the HK style selector lever for the Franklin Armory trigger packs.   With our new skeletonized...
    HKP-20527
    $69.95
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  • HK91, G3, PTR Magazine - 20 Round - Aluminum - USED - FMP HK91, G3, PTR Magazine - 20 Round - Aluminum - USED - FMP
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    HK91, G3, PTR Magazine - 20 Round - Aluminum - USED - FMP

    FMP HK CONTRACT

    $11.95
    FMP Portuguese HK91, G3, PTR 20 Round Aluminum Magazine - Used Portuguese FMP 20-round aluminum magazine for HK91, G3, and PTR pattern rifles. A solid factory-style magazine option for range use, replacement needs, or adding extra mags to your setup...
    HKP-22713
    $11.95
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  • New - PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile - HKP-21806 HK91, G3 Tactical Handguard - Low Profile
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    HK91, G3 Tactical Handguard - Low Profile

    PTR

    $109.95
    PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile 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, with the...
    HKP-21806-M
    $109.95
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  • Out Of Stock
    New - H&K MP5, 93/53/33, 91 (9mm, .40/10, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Housing - Clipped & Pinned - HKP-19801 HK MP5, HK33, HK53, HK93, HK91 Housing - 3 Position 0,1,3 Pictogram - Clipped and Pinned

    HK MP5, HK33, HK53, HK93, HK91 Housing - 3 Position 0,1,3 Pictogram - Clipped and Pinned

    H&K Heckler & Koch

    $249.95
    H&K MP5, 93/53/33, 91 (9mm, .40/10, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Housing - Clipped & Pinned Introducing the universal 3 position burst pictogram housing for HK MP5, SP5, and .40/10 firearms. This new factory...
    HKP-19801
    $249.95
    Out Of Stock
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    $249.95
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  • New - H&K 91/G3 (7.62x51/.308) Complete Trigger Pack - Semi Auto - HKP-00217
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    HK91, G3 Trigger Pack - Complete - Semi Auto

    H&K Heckler & Koch

    $348.95
    H&K G3/91 (7.62x51/.308) Complete Trigger Pack - Semi Auto HK German manufactured trigger pack complete with all the parts being professionally converted from a factory German F/A trigger pack to semi-only.  Compatible With: HK91, G3, PTR...
    HKP-00217
    $348.95
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    $348.95
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