All Parts

All Parts

At HK PARTS, we bring you a wide array of high-quality H&K accessories and components for your favorite firearms. Whether you're upgrading your H&K pistol or rifle, or even looking for parts kits, we've got you covered. Discover a range of top-rated components for popular models like VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, we have it all. Enhance your firearm's performance and functionality with our premium components.

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  • H&K HK G36 German Brass Catcher - OD Green H&K HK G36 German Brass Catcher - OD Green
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    H&K HK G36 German Brass Catcher - OD Green

    H&K Heckler & Koch

    $749.95
    H&K HK G36 German Brass Catcher - OD Green Brass catcher (capacity of approx. 60 cases) Comes with an integrated mag well, that makes the installation very easy. Just switch the mag wells to install the Brass Catcher.
    HKP-18490
    $749.95
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    H&K HK G36 Incomplete Bolt Group Carrier - Black H&K HK G36 Incomplete Bolt Group Carrier - Black
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    H&K HK G36 Incomplete Bolt Group Carrier - Black

    H&K Heckler & Koch

    $0.00
    HK G36 Bolthead Carrier Incomplete This is not compatible with a HK SL8.
    HKP-16434
    $0.00
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  • H&K HK G36 Picatinny Evaluation Adapter - Black H&K HK G36 Picatinny Evaluation Adapter - Black
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    H&K HK G36 Picatinny Evaluation Adapter - Black

    H&K Heckler & Koch

    $59.95
    HK G36 Picatinny Evaluation Adapter Picatinny Evaluation Adapter for Carry Handle and Sight Rail. Includes all mounting hardware. Compatible With: G36 G36K G36C Models
    HKP-18779
    $59.95
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  • H&K HK G36 Picatinny Rail - Black H&K HK G36 Picatinny Rail - Black
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    H&K HK G36 Picatinny Rail - Black

    H&K Heckler & Koch

    $195.99
    H&K HK G36 Picatinny Rail - Black HK Lateral Picatinny Rail - Ambidextrous for Sight Rails. Compatible With: G36 G36K G36C Specifications: Material: Aluminum
    HKP-18725
    $195.99
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    H&K HK G36 to AR-15 Mag Conversion Mag Well - RAL 8K H&K HK G36 to AR-15 Mag Conversion Mag Well - RAL 8K
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    H&K HK G36 to AR-15 Mag Conversion Mag Well - RAL 8K

    H&K Heckler & Koch

    $0.00
    HK G36 To AR15, M4 Magazine Conversion - RAL 8K Simply swap the magazine well from the G36 to this offering and you can then run AR15/M4 style magazine in your G36 or SL8/G36 conversion. Allows Use Of All AR15-M4 magazines in the G36 with this magwell...
    HKP-17691
    $0.00
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    H&K HK G36, HK SL8 Lower Axle Pin
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    H&K HK G36, HK SL8 Lower Axle Pin

    H&K Heckler & Koch

    $0.00
    G36 & HK SL8 Lower Axle Pin The G36/SL8 (all models) uses the same size axle pin for all of the lower components (3 total). Except for the bolt holding open the device axle. Must insert from the right side to the left (per factory instruction).
    HKP-00291
    $0.00
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    H&K HK G36/SL8 New Style Scope Rail HK German - Black H&K HK G36/SL8 New Style Scope Rail HK German - Black
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    H&K HK G36/SL8 New Style Scope Rail HK German - Black

    H&K Heckler & Koch

    $234.95
    HK German HK SL8 & G36 Picatinny Scope With Rail/ Carry Handle This is the perfect mounting solution for optics. Made from the highest quality combat grade aluminum with a hard coat anodized black finish. Compatible With: G36 models SL8...
    HKP-01878
    $234.95
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    $234.95
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    H&K HK G36/SL8 Piston Rod Spring
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    H&K HK G36/SL8 Piston Rod Spring

    H&K Heckler & Koch

    $0.00
    HK G36 & SL8 Piston Rod Spring A must-have spare repair and replacement part. New HK German factory part. Compatible With: HK G36 HK SL8
    HKP-01863
    $0.00
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    H&K HK G36/UMP Tactical Sling - Used
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    H&K HK G36/UMP Tactical Sling - Used

    H&K Heckler & Koch

    $0.00
    HK Factory G36 & UMP Tactical Sling. Black In Color. USED.
    HKP-00632
    $0.00
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    H&K HK G36C Handguard - Black H&K HK G36C Handguard - Black
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    H&K HK G36C Handguard - Black

    H&K Heckler & Koch

    $0.00
    G36C Slim line handguard with Hkey mounting slots HK German G36C forearm with HKey mounting slots. Made in Germany.
    HKP-18546
    $0.00
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  • H&K HK G36K Factory Blank Firing Adapter H&K HK G36K Factory Blank Firing Adapter
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    H&K HK G36K Factory Blank Firing Adapter

    H&K Heckler & Koch

    $139.95
    H&K HK G36K Factory Blank Firing Adapter G36K Factory HK blank firing adapter. This adapter is date coded and comes complete with the spring clip installed. Compatible With: G36K exclusively
    HKP-16974
    $139.95
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  • Out Of Stock
    H&K HK G36K Parts Kit for HDPS Stock Block Conversion
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    H&K HK G36K Parts Kit for HDPS Stock Block Conversion

    H&K Heckler & Koch

    $0.00
    G36K Parts Kit Complete Less Stock Hinge Section Factory German HK G36K parts kit with the most desirable of the necessary parts for an HDPS stock block conversion.  Contact Black Ops Defense for your stock block conversion.   Includes: 3...
    HKP-16514
    $0.00
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    H&K HK G36K Slimline Handguard - Black H&K HK G36K Slimline Handguard - Black
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    H&K HK G36K Slimline Handguard - Black

    H&K Heckler & Koch

    $0.00
    G36K Slim line handguard with Hkey mounting slotsHK German G36K forearm with HKey mounting slots. Made in Germany.
    HKP-18483
    $0.00
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    H&K HK Mark 23 7.5mm +6 Rear Sight
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    H&K HK Mark 23 7.5mm +6 Rear Sight

    H&K Heckler & Koch

    $64.95
    HK Mark 23 Rear Sight 7.5 mm 6.7mm - +2mm Other Rear Sight Heights: 5.5mm (-8) 5.9mm (-4) 6.3mm (standard) 6.7mm (+2) 7.1mm (+4) 7.5mm (+6)
    HKP-02599
    $64.95
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    $64.95
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  • H&K HK Mark 23 Buffer Recoil Assembly Spring Washer H&K HK Mark 23 Buffer Recoil Assembly Spring Washer
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    H&K HK Mark 23 Buffer Recoil Assembly Spring Washer

    H&K Heckler & Koch

    $9.95
    H&K HK Mark 23 Buffer Recoil Assembly Spring Washer This washer has a recessed groove for the spring on the end of the recoil assembly.
    HKP-16641
    $9.95
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    $9.95
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  • H&K HK Mark 23 Recoil Rod H&K HK Mark 23 Recoil Rod
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    H&K HK Mark 23 Recoil Rod

    H&K Heckler & Koch

    $79.95
    H&K HK Mark 23 Recoil Rod Factory HK Mark 23, SOCOM Recoil Rod Stripped. Ideal to keep as a spare, as this item is a repair & replacement item.
    HKP-16639
    $79.95
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  • H&K HK Mark 23 Recoil Spring Washer
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    H&K HK Mark 23 Recoil Spring Washer

    H&K Heckler & Koch

    $9.95
    H&K HK Mark 23 Recoil Spring Washer New HK German Mark 23, SOCOM Recoil Spring Washer for Recoil Assembly.
    HKP-16640
    $9.95
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    H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used
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    H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used

    H&K Heckler & Koch

    $0.00
    H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used USED pull off's from HK German MP5's. This is a complete trigger group that is a used 4 Position Burst (0,1,3,F) trigger group complete. This is a factory HK push pin Trigger group just as it...
    HKP-19483
    $0.00
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  • H&K HK MP5 40 & MP5 10mm Factory F/A Bolt Carrier H&K HK MP5 40 & MP5 10mm Factory F/A Bolt Carrier
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    H&K HK MP5 40 & MP5 10mm Factory F/A Bolt Carrier

    H&K Heckler & Koch

    $449.95
    New HK German MP5 40/10 Factory F/A Bolt Carrier This is the latest and greatest version of the MP5 40 and MP5 10mm carrier. No longer in production or manufactured. Tungsten filled German HK and the real deal.  
    HKP-19390
    $449.95
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  • H&K HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger Group
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    H&K HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger Group

    H&K Heckler & Koch

    $769.95
    HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger Group
    HKP-01752
    $769.95
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    $769.95
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  • H&K HK MP5 9mm Single Shot Reverse Stretch Build Kit
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    H&K HK MP5 9mm Single Shot Reverse Stretch Build Kit

    H&K Heckler & Koch

    $1,849.95
    California Spec Single Shot Reverse Stretch Kit - German & USA Made Parts: This kit was built with the CA market in mind. This kit has a specially designed locking piece that once installs it renders the kit a single shot style roller lock. This kit...
    HKP-19698
    $1,849.95
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  • Out Of Stock
    H&K HK MP5 A3 Refinished Stock - Surplus H&K HK MP5 A3 Refinished Stock - Surplus
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    H&K HK MP5 A3 Refinished Stock - Surplus

    H&K Heckler & Koch

    $0.00
    Used German Manufactured A3 Retractable Stock - Refinished Each German HK stock is used and had been refinished (early 80's manufacture)A one time offering of some well used German stocks that have been professionally dissembled, cleaned, repainted and...
    HKP-16841
    $0.00
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    $0.00
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  • H&K HK MP5 Parts Kit A3 4-Position Ambidextrous Lower
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    H&K HK MP5 Parts Kit A3 4-Position Ambidextrous Lower

    H&K Heckler & Koch

    $5,499.95
    HK German MP5 9mm Used Parts Kit Complete(Minus Receiver Of Course).All MP5 Kits:100% GERMAN PARTS HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube Front Sight Tower Wide Forearm - Black Bolt Group - MP5 Full Auto Push Pins - 1 Large and 2 Small 30...
    HKP-01301
    $5,499.95
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    H&K HK MP5, 94, 53 Factory Slimline Forearm - Used H&K HK MP5, 94, 53 Factory Slimline Forearm - Used
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    H&K HK MP5, 94, 53 Factory Slimline Forearm - Used

    H&K Heckler & Koch

    $0.00
    Used In fair/Good Shape Heckler & Koch Genuine HK94/MP5 slimline forearm. Well used but this is a perfect project forearm. This is a rare and hard to find part that fits on all MP5,94 & MP5 40/10 variants. HK no longer makes these but we have a...
    HKP-01720
    $0.00
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    $0.00
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    H&K HK MP5K Gun Briefcase H&K HK MP5K Gun Briefcase
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    H&K HK MP5K Gun Briefcase

    H&K Heckler & Koch

    $0.00
    H&K HK MP5K Gun Briefcase Compatible With: MP5K Can be adapted for use with custom builds and other MP5K variants Specifications: Dimensions: 20 in/15 in/ 5 in Condition: New Origin: Germany
    HKP-19207
    $0.00
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    $0.00
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    H&K HK MP7 Extended Charging Handle - Black H&K HK MP7 Extended Charging Handle - Black
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    H&K HK MP7 Extended Charging Handle - Black

    H&K Heckler & Koch

    $0.00
    HK MP7 Extended Charging Handle HK German Factory New Extended Charging Handle Compatible With: MP7 MP7A1 MP7A2
    HKP-18784
    $0.00
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    $0.00
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  • H&K HK MR556/416 9" Modular Rail System - Black H&K HK MR556/416 9" Modular Rail System - Black
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    H&K HK MR556/416 9" Modular Rail System - Black

    H&K Heckler & Koch

    $399.95
    HK MR556, CR556 Modular Rail System 9"- Black HK German MR556 & CR556 handgaurd that accepts the HKey style modular rail sections. This is also the forearm that clear the OSS suppressor system. Compatible With: MR 556 HK 416 CR 556 *Weight: 13.4...
    HKP-17341
    $399.95
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    $399.95
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