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 G3 Standard Stock Buttpad - Green - Used - BLEMISHED H&K Heckler & Koch HKP-21865-ODG-B HK G3 Standard Stock Buttpad - Green - Used - BLEMISHED H&K Heckler & Koch HKP-21865-ODG-B
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    HK G3 ButtPlate with Catch Spring - Standard Stock - Green - Used - BLEMISHED

    H&K Heckler & Koch

    Now: $0.97
    Was: $2.95
    HK G3 Standard Stock Buttpad - Green - Used - BLEMISHED SOLD INDIVIDUALLY - CRACKED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This German-made buttpad is an excellent replacement for your...
    HKP-21865-ODG-B
    Now: $0.97
    Was: $2.95
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  • Refurbished - HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished - HKP-21922 HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished
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    HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished

    H&K Heckler & Koch

    $84.95
    HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished HK G3 factory steel 15-round magazine, expertly restored to its former glory. This magazine has been meticulously refinished inside and out, featuring a polished follower along with a fully...
    HKP-21922
    $84.95
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  • New - H&K A3 Stock Release Lever Rebuild Kit - HKP-21851
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    HK A3 Buttstock Release Lever Rebuild Kit

    H&K Heckler & Koch

    $14.95
    H&K A3 Stock Release Lever Rebuild Kit This A3 collapsible stock rebuild kit is designed for the release lever on MP5, SP5, 93/53/33, and G3/91 collapsible stocks.  With A3 stocks becoming more expensive it's a great idea to keep this kit on...
    HKP-21851
    $14.95
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  • New - PTR PDW (7.62x39) & (7.62x51/.308) Semi-Auto Bolt Carrier - HKP-14140 PTR PDW Bolt Carrier - Semi Auto - 7.62x39 and 7.62x51
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    PTR PDW Bolt Carrier - Semi Auto - 7.62x39 and 7.62x51

    PTR

    $229.95
    PTR PDW Semi Auto Carrier - US Made Semi-automatic bolt carrier manufactured by PTR in the United States using HK-pattern specifications. Designed for PTR PDW platforms and counts as one U.S.-made 922r compliant component. Compatible with both 7.62x51mm,...
    HKP-14140
    $229.95
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  • New - PTR PDW (7.62x51/.308) 9 inch Barrel - HKP-02788 PTR PDW Barrel - 7.62 / .308 - 9" - SBR
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    PTR PDW Barrel - 7.62 / .308 - 9" - SBR

    PTR

    $189.99
    PTR PDW .308 Pistol or SBR Barrel- USA This part comes new in the white, never installed, and ready for the HK project. Features: Just under 9" inches long 1:10 twist U.S. made barrel counts as one 922r compliant part Please Note: Front sight towers...
    HKP-02788
    $189.99
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  • Out Of Stock
    New - HKP PTR-32 (7.62x39) Complete Bolt Group - PDW - HKP-17387 HK PTR-32 Bolt Group - Complete - PDW

    HK PTR-32 Bolt Group - Complete - PDW

    HKP HK Parts

    $379.95
    US Made PTR 32 PDW Bolt Group Complete Semi-Auto. Factory correct bolt head and locking piece for use in the PTR 32 chambered in 7.62X39. Brand new May 2015 manufacture. This is the correct bolt for all PTR PDW with 8" barrels.
    HKP-17387
    $379.95
    Out Of Stock
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    $379.95
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  • New - H&K G3/91/PTR (7.62x51/.308) 4 Position (0,1,3,F Pictogram) Double Tang Trigger Housing- Clipped & Pinned - HKP-01515 HK91, G3 Trigger Housing - Double Tang 4 Position 0,1,3,F Pictogram - Clipped and Pinned
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    HK91, G3 Trigger Housing - Double Tang 4 Position 0,1,3,F Pictogram - Clipped and Pinned

    H&K Heckler & Koch

    $534.95
    HK Heckler and Koch 4 Position 0,1,3,F Pictogram Double Tang Trigger Housing, Clipped and Pinned for HK G3 and HK91 and PTR  This ambidextrous HK trigger housing features a 4 position pictogram 0,1,3,F and is set up in a semi-auto clipped and pinned...
    HKP-01515
    $534.95
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  • HK MP5, AP5 Magazine Catch Push Button
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    HK MP5, AP5 Magazine Catch Push Button

    MKE

    $6.95
    HK MP5, AP5 Magazine Catch Button Push button for magazine catchCompatible with: HK MP5, SP5 HK MP5K, SP5K HK SP89 HK94 HK33, HK53, HK93 HK91, G3 In-spec. clones and custom builds
    HKP-22548
    $6.95
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  • On Sale
    HK91, G3 Cocking Tube with Hanger - Ribbed - USED HK91, G3 Cocking Tube with Hanger - Ribbed - USED
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    HK91, G3 Cocking Tube with Hanger - Ribbed - USED

    H&K Heckler & Koch

    Now: $27.95
    Was: $34.95
    HK German HK G3, HK91 Ribbed Cocking Tube With Hanger Installed - Used VARYING CONDITION SHOWN - SOLD INDIVIDUALLY DENTED.  REFER TO PICTURES USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Used...
    HKP-00719-USED
    Now: $27.95
    Was: $34.95
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  • Out Of Stock
    On Sale
    HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED

    HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED

    HKP HK Parts

    Now: $65.95
    Was: $149.95
    HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Linear compensators give you the best of both...
    HKP-19338-USED
    Now: $65.95
    Was: $149.95
    Out Of Stock
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    Now: $65.95
    Was: $149.95
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  • HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
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    HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm

    H&K Heckler & Koch

    $12.95
    HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking components in place for proper fit and function. Compatible...
    HKP-22482
    $12.95
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    $12.95
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  • HK91, G3, HK93 Anti-Rattle Mag Release HK91, G3, HK93 Anti-Rattle Mag Release
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    HK91, G3, HK93 Anti-Rattle Mag Release

    MKE

    $32.95
    MKE Anti Rattle Paddle Magazine Release Upgrade your rifle with MKE's anti-rattle style paddle mag release. Compatible With: HK G3, HK91 HK33, HK53, HK93 HK PSG1, MSG90 In-spec clones and custom builds
    HKP-99348
    $32.95
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    $32.95
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