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 - HK German Butt Stock Push Pin - HKP-00076 HK MP5, HK90 Series Buttstock Push Pin - Large
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    HK MP5, HK90 Series Buttstock Push Pin - Large

    H&K Heckler & Koch

    $8.95
    HK German Butt Stock Push Pin Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. These are great replacement or spare parts to keep on hand as they fit all of the 90-series firearms below. The large push...
    HKP-00076
    $8.95
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  • Used - H&K SEF Long Axle Selector Lever For Polymer Trigger Housings - HKP-01105 Long Axle Selector Lever - SEF, 0,1 Trigger Housings
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    Long Axle Selector Lever - SEF, 0,1 Trigger Housings

    H&K Heckler & Koch

    $24.95
    HK SEF Longer Axle Selector Lever For The Polymer SEF Type Grips Or Trigger Housings - Used This is the factory-correct selector lever for SEF or SEF-style semi-auto-style trigger packs and grip frames. These are pulled from German HK SEF trigger...
    HKP-01105
    $24.95
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    $24.95
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  • Used - H&K Push Pin Set - MP5, G3/91, 33/53/93 - HKP-00673
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    HK MP5, HK91, G3, HK33, HK53, HK93 Push Pin Set

    H&K Heckler & Koch

    $15.49
    HK Heckler and Koch Set of Two (One Large and One Small) Push Pins -Used These are great replacements or spare parts to keep on hand.  Compatible With: MP5, SP5, SP89 HK91, G3 HK33, HK53, HK93 PTR and GSG-5 family of guns. Please...
    HKP-00673
    $15.49
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  • Used - H&K German Roller Retainer Plate For Rollers - HKP-02690 HK German Roller Retainer Plate For Rollers
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    HK German Roller Retainer Plate For Rollers

    H&K Heckler & Koch

    $7.95
    HK German Roller Retainer Plate For All Rollers - Used This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with the use and age of the service weapon.  Compatible With All Original 1st...
    HKP-02690
    $7.95
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  • New - MFI Universal Low Profile Scope Mount - HKP-00762 HK MP5 Optic Mount - Low Profile - Picatinny
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    HK MP5 Optic Mount - Low Profile - Picatinny

    MFI

    $124.95
    MFI's crafted HK MP5 Series Mount - Low Profile Scope - Universal MFI's universal mount will fit all models from 9mm through .308. The sleek design allows the operator to flip the scope mount in either direction without blocking the ejection port (MP5...
    HKP-00762
    $124.95
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  • New - HKP Vertical Grip - Picatinny Mount - Short - HKP-16409 HKP Vertical Grip - Picatinny Mount - Short HKP HK Parts HKP-16409
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    HK Vertical Foregrip - Short - Picatinny

    HKP HK Parts

    $24.95
    HKP Vertical Grip - Picatinny Mount - Short This grip is by far the nicest shorter style or stubby grip we have encountered for the money. This rock solid grip is a must have for anyone that uses a vertical grip. This is the only vertical grip out there...
    HKP-16409
    $24.95
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  • New - HKP Armorers Bench Block Tool - HKP-17133 Armorer's Bench Block Tool
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    Armorer's Bench Block Tool

    HKP HK Parts

    $14.95
    HK Parts Armorers Puck Punch Bench Block Tool for all HK Firearms The HK armorers' puck punch bench block tool is standard issue at all HK armorers' courses. The purpose of the tool is to aid in installing axle and roll pins in your firearm while...
    HKP-17133
    $14.95
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  • New - H&K Barrel Retaining Pin - 5mm Standard Size - HKP-00071 HK Barrel Pin Retaining - 5mm - Standard Size
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    HK Barrel Pin Retaining - 5mm - Standard Size

    H&K Heckler & Koch

    $9.95
    H&K HK Pin - Barrel - Retaining - 5mm - Standard Size Barrel Retaining Pin Each barrel pin is used for installing a new or replacement barrel. HK suggest using a new factory barrel pin when installing or reinstalling a HK barrel. We also offer the HK...
    HKP-00071
    $9.95
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  • New - H&K German Sling Hook - Black - HKP-19433
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    HK German Sling Hook

    H&K Heckler & Koch

    $8.95
    H&K German Sling Hook New old stock HK German sling hook. Made from steel not the cheap aluminum or zinc offerings found elsewhere. Made in Germany. Great For HK sling projects and for spares. The real deal. This is the sling hook that all others...
    HKP-19433
    $8.95
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  • New - Holex Feeler Gauge Set - 20 Piece - German - HKP-17212 Holex Feeler Gauge Set - 20 Piece - German
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    Holex Feeler Gauge Set - 20 Piece - German

    HKP HK Parts

    $14.95
    Holex Feeler Gauge Set - 20 Piece - German The perfect companion tool for all HK roller lock firearm owners. Each tool includes 20 feeler gauges from .05mm-1.0mm in .05 increments. To help users and shooters maintain the factory recommended bolt gap...
    HKP-17212
    $14.95
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  • Used - H&K G3 Parts Kit - PTR Barrel & Flat - HKP-16579
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    HK91, G3 Parts Kit - RCM Barrel - PTR Receiver Flat

    H&K Heckler & Koch

    $588.95
    HK German G3 .308/7.62 X 51mm Surplus Parts Kit, Receiver Flat - RCM Barrel Finally, after more than 4 years of searching the globe we have HK German Surplus G3 parts kits available to offer. Each parts kit comes complete with all parts from a...
    HKP-16579
    $588.95
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  • New - PTR HK 91/G3 (7.62x51/.308) Receiver Flat - HKP-02320 HK91, G3 Receiver Flat - US Made
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    HK91, G3 Receiver Flat - US Made

    PTR

    $99.95
    HK G3, 91, PTR & CETME Flat - PTR Made by PTR with original HK tooling using factory specifications and a properly stamped receiver. No FFL is required as this is an unfolded flat that ships directly to the customer. This US made receiver flat...
    HKP-02320
    $99.95
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    $99.95
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