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
    New - HK MP5 8" Cocking Tube Extrusion - Gunsmith Special - HKP-99061
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    HK MP5 Cocking Tube - Extrusion - 8" - Gunsmith Special

    USA

    Now: $19.95
    Was: $54.95
    HK MP5 8" Cocking Tube Extrusion - Gunsmith Special  This 8" cocking tube extrusion is ideal for custom HK-style firearm builds, repairs, or refurbishments, providing a solid foundation for restoring or fabricating cocking tubes on HK MP5, G3, and...
    HKP-99061
    Now: $19.95
    Was: $54.95
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  • Out Of Stock
    New - HKP HK 91/G3 (7.62x51/.308) Trigger Group (0,1) - 2 Position - Safe/Semi Only - HKP-17235 HK91, G3 Trigger Group (0,1) - 2 Position - Safe / Semi Only

    HK91, G3 Trigger Group (0,1) - 2 Position - Safe / Semi Only

    HKP HK Parts

    $429.95
    G3, 91, PTR Trigger Group 2 Position Housing 0,1- Safe, Semi Only Finally a lower cost alternative to the spendy & rare all-German HK FBI or 0,1 ambidextrous trigger group in a 2 position factory German HK housing. Each trigger group features a...
    HKP-17235
    $429.95
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    $429.95
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  • On Sale
    New - HKP HK MP5 Picatinny Rail Optic Mount - Raised - BLEMISHED - HKP-21489-B HK MP5 Optic Mount - Raised - Picatinny - BLEMISHED
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    HK MP5 Optic Mount - Raised - Picatinny - BLEMISHED

    HKP HK Parts

    Now: $68.95
    Was: $109.95
    HKP HK MP5 Picatinny Rail Optic Mount - Raised Mount - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts Picatinny style optic mount for the MP5...
    HKP-21489-B
    Now: $68.95
    Was: $109.95
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    Now: $68.95
    Was: $109.95
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  • New - Trijicon Bright & Tough - Night Sights - H&K SP89, Carbines, Rifles - HKP - HKP-20325 HK MP5, MP5K, G3 Night Sights
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    HK MP5, MP5K, G3 Night Sights

    XS Sights

    $159.95
    Trijicon Bright & Tough - Night Sights - H&K SP89, Carbines, Rifles Trijicon bright & tough night sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. Housed in a metal...
    HKP-20325
    $159.95
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    $159.95
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  • New - Surefire Procomp AR Rifles (7.62x51/.308) Muzzle Brake - Threaded 5/8x24 RH - HKP-19486 Procomp AR Rifles Muzzle Brake - 7.62x51 / .308 - Threaded 5/8x24 RH
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    Procomp AR Rifles Muzzle Brake - 7.62x51 / .308 - Threaded 5/8x24 RH

    Surefire

    $95.00
    Surefire Procomp AR Rifles (7.62x51/.308) Muzzle Brake - Threaded 5/8x24 RH The SureFire PROCOMP muzzle brake is designed for AR10/LR308 rifles and variants with 5/8x24 muzzle threads. It significantly reduces recoil impulse and features neutral porting...
    HKP-19486
    $95.00
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  • Out Of Stock
    New - HK G36C/G36K Gas Piston - HKP-17277 HK G36C, G36K Gas Piston - US Made

    HK G36C, G36K Gas Piston - US Made

    USA

    $49.95
    HK G36C/G36K Gas Piston New Tom Bostic US Made G36C & G36K Gas Piston. Counts as one US made compliant part for your SL8 - G36C or G36K style conversion. This is one of the best parts to use on the conversion as it is one of the cheapest ways to get...
    HKP-17277
    $49.95
    Out Of Stock
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    $49.95
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  • Used - H&K 90 Series F/A Trigger Box - SEF- USED - HKP-22156 HK90 Series Trigger Box - Full Auto SEF- USED
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    HK90 Series Trigger Box - Full Auto SEF- USED

    H&K Heckler & Koch

    $89.95
    H&K 90 Series F/A Trigger Box - SEF- USED UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Used genuine H&K full-auto trigger box for 90 series firearms. Controls fire selector function and houses fire control component. Fits all...
    HKP-22156
    $89.95
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    $89.95
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  • HK G3K, HK33 Flash Hider - 4 Prong Enclosed
HK G3K, HK33 Flash Hider - 4 Prong Enclosed
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    HK G3K, HK33 Flash Hider - 4 Prong Enclosed

    RCM

    $187.95
    RCM HK G3K & HK33 Flash Hider - 4 Prong - Enclosed End The RCM G3K flash hider can be welded to a 12.69" barrel to achieve a non-SBR OAL of 16 plus inches or add to any other configuration. Made in the US from ordnance grade steel and counts as 1...
    HKP-21598
    $187.95
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    $187.95
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  • Out Of Stock
    New - H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned - HKP-20404 HK MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned

    HK MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned

    H&K Heckler & Koch

    $0.00
    H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned Introducing the new Factory German trigger housing, designed for use in safe, semi, and burst configurations...
    HKP-20404
    $0.00
    Out Of Stock
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    $0.00
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  • Used - H&K 91/G3 (7.62x51/.308) Navy Style Trigger Group (SEF) - Used Good - HKP-00930 HK91, G3 Navy Style Trigger Group (SEF) - Used Good
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    HK91, G3 Navy Style Trigger Group (SEF) - Used Good

    H&K Heckler & Koch

    $354.95
    H&K 91/G3 (7.62x51/.308) Navy Style Trigger Group (SEF) - Used Good These are pulled from German military HK G3 rifles. These work great as spares or for collectible items. These are used but in good shape overall. Includes: SEF Black Polymer...
    HKP-00930
    $354.95
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    $354.95
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  • Out Of Stock
    New - HKP HK 91/G3 (7.62x51/.308) 20 Round Steel Magazine - Latest HK Production - HKP-00542 HK91, G3 20 Round Steel Magazine - Latest HK Production

    HK91, G3 20 Round Steel Magazine - Latest HK Production

    H&K Heckler & Koch

    $0.00
    HK 91, G3, PTR .308 20 Round All Steel Magazine - German HK HK .308 factory steel 20 round all steel magazine. Each magazine is the latest HK German manufactured. Compatible With: HK 91 HK G3 PTR-91, PTR PDW Vector 51, G3K, HK51, HK51K Century C308...
    HKP-00542
    $0.00
    Out Of Stock
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    $0.00
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  • New - HK German SEF SEMI .308 Clipped & Pinned Trigger Group - HKP-00210-CP Semi-Auto SEF Trigger Group - .308
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    Semi-Auto SEF Trigger Group - .308

    H&K Heckler & Koch

    $549.95
    HK German SEF SEMI .308 Clipped & Pinned Trigger Group The new HK German-made semi-auto trigger group comes in .308 caliber already clipped & pinned. Compatible With: HK 91 HK G3 C308 PTR-91 HK .308 rifles. SEF Navy Style Trigger Group...
    HKP-00210-CP
    $549.95
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    $549.95
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