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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  • New - HKP Armorer's Tool Kit - HKP-18659 HK Armorer's Tool Kit

    HK Armorer's Tool Kit

    HKP HK Parts

    $67.95
    HKP Armorer's Tool Kit   Includes: HK Parts Armorers Puck Punch Bench Block Tool 8 Piece German Rennsteig punch set 20 Piece German Feeler gauge set
    HKP-18659
    $67.95
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  • New - Magpul HK MP5, HK 94, HK 93, HK 91, PTR SL Grip Module Semi Shelf - Black - HKP-19320 HK MP5, HK94, HK93, HK91, PTR SL Grip Module Semi Shelf

    HK MP5, HK94, HK93, HK91, PTR SL Grip Module Semi Shelf

    Magpul

    $59.95
    Magpul - SL Grip Module - HKMP5/94/93/91 & Semi Shelf & HK Clones The Magpul SL Grip Module is a high-strength, injection-molded polymer grip module for HK MP5/94/93/91 & Semi Shelf HK Clones*. Designed with improved ergonomics, a non-slip...
    HKP-19320
    $59.95
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  • New - HKP HK MP5 Picatinny Rail Optic Mount - Raised - HKP-21489 HK MP5, MP5K Optic Mount - Raised - Picatinny - US

    HK MP5, MP5K Optic Mount - Raised - Picatinny - US

    HKP HK Parts

    $109.95
    HKP HK MP5 Picatinny Rail Optic Mount HK Parts Picatinny style optic mount for the MP5 or MP5K.  Quickly mount any Picatinny optic to your HK while retaining a full view of the factory sights. Available exclusively at HK Parts. Compatible With: HK...
    HKP-21489
    $109.95
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  • New - HKP HK 91/G3 (7.62x51/.308) Weldment Set Complete - HKP-17509

    HK91, G3 Weldment Set Complete

    HKP HK Parts

    $99.95
    HK G3, HK91, PTR Weldment Set Complete New US manufactured billeted from solid ordnance grade bar stock. Perfect for roller lock or other custom builds. Each weldment set unit is precisely machined. Includes: Rear sight base Semi auto shelf 2 X rear...
    HKP-17509
    $99.95
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  • New - HKP Semi Auto Shelf for Receiver - Billeted - HKP-21470 HK Semi Auto Shelf for Receiver - Billeted

    HK Semi Auto Shelf for Receiver - Billeted

    HKP HK Parts

    $17.95
    HKP Semi Auto Shelf for Receiver - Billeted HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the use of...
    HKP-21470
    $17.95
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  • Out Of Stock
    New - HKP Roller +8 - New - 8.08mm - HKP-19437 HK Roller +8 - New - 8.08mm

    HK Roller +8 - New - 8.08mm

    HKP HK Parts

    $8.99
    Roller +8 - New - 8.08mm HK Parts Standard (8.08 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...
    HKP-19437
    $8.99
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  • New - HKP HK93, HK91, HK33, HK53, G3, FMP21 5.56 / .223 and 7.62x51 / .308 Rear Sight Base Weldment - HKP-17386 HK33, HK53, HK93, HK91, G3 Rear Sight Base Weldment

    HK33, HK53, HK93, HK91, G3 Rear Sight Base Weldment

    HKP HK Parts

    $29.95
    HKP HK Parts Rear Sight Base Weldment for HK G3, HK91, PTR & HK93, 33 & 53, FMP21 New US manufactured billeted from solid ordnance grade bar stock. Perfect for roller lock or other custom builds. Each unit is precisely machined and the best rear...
    HKP-17386
    $29.95
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  • Used - Rheinmetall 91/G3/MSG90 20 Round Magazine - Aluminum - Used - HKP-21840 HK91, G3,  PTR Magazine - 20 Round - Aluminum - Rheinmetall - Used

    HK91, G3, PTR Magazine - 20 Round - Aluminum - Rheinmetall - Used

    Rheinmetall

    $12.95
    Rheinmetall HK G3, HK91, & PTR91 - 20 Round Magazine - Used Perfect for your HK G3/PTR style firearm. The G3 alloy mags were made for the German Army and are no longer in production. Once they are gone, they are gone for good. LAST...
    HKP-21840
    $12.95
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  • New - USA Small Push Pin Replacement Spring - HKP-20368 HK MP5, HK90 Series Push Pin Spring

    HK MP5, HK90 Series Push Pin Spring

    $1.95
    Replacement Spring for HK style push pin - Small  A must have replacement item to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn-out springs that come loose while in...
    HKP-20368
    $1.95
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  • HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2 HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2

    HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2

    HKP HK Parts

    $98.95
    HKP HK MP5, MP5K Aimpoint ACRO P1, P2 Optic Mount  The HK Parts Aimpoint ACRO low-profile mount is perfect for shooters seeking a minimalistic mount with an absolute co-witness.  Crafted in the US from aircraft grade aluminum and coated in...
    HKP-21229-M
    $98.95
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  • New - HKP HK91, G3, PTR Dual Magazine Clamp - HKP-19634 HK91, G3, PTR Dual Magazine Clamp

    HK91, G3, PTR Dual Magazine Clamp

    HKP HK Parts

    $29.95
    HK91, G3, PTR - .308/762 Dual Mag Clamp The HK91, G3 magazine grip or dual magazine clamp.  Holds two magazines together for ease of use and easy access to 2 magazines. Half the weight of the factory mag clamp. HK Parts highly recommends this mag...
    HKP-19634
    $29.95
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  • New - H&K 91/G3 (7.62x51/.308) Rear Sight Assembly - HKP-18163 HK91, G3 Rear Sight Assembly

    HK91, G3 Rear Sight Assembly

    H&K Heckler & Koch

    $39.95
    HK German G3, 91, PTR Rear Sight Assembly Complete - HK German factory rear sight assembly with all hardware included. We offer the new HK sights at the BEST price in the country. Each set comes complete with all parts and all mounting hardware included...
    HKP-18163
    $39.95
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