HK Rifle / SMG Parts

HK Rifle / SMG Parts

Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!

Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.

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  • New - H&K HK MR556/416 Ejector For Bolt Head - HKP-00037
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    HK416, MR556 Ejector For Bolt Head

    H&K Heckler & Koch

    $23.95
    H&K HK MR556/416 Ejector For Bolt Head HK German factory part.  Compatible With: HK MR556 HK 416
    HKP-00037
    $23.95
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    $23.95
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  • New - HK MR556/416 DMR Extra Long Forearm - Black - HKP-17683 HK416, MR556 DMR Extra Long Handguard
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    HK416, MR556 DMR Extra Long Handguard

    H&K Heckler & Koch

    $859.95
    HK MR556/416 DMR Extra Long Forearm New Heckler & Koch MR556, HK 416 Extended DMR (designated marksman rifle) Forearm With Suppressor Window Cutout. Optimized design to mitigate the heat emissions for long range shooting and to prevent the mirage...
    HKP-17683
    $859.95
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    $859.95
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  • New - HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug - HKP-18639 HK UMP Barrel - 9mm - Threaded 1/2x28 with 3 Lug - US
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    HK UMP Barrel - 9mm - Threaded 1/2x28 with 3 Lug - US

    HKP HK Parts

    $299.95
    HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug HKP UMP 3-lug 1/2x28 threaded barrel. This is the perfect replacement for a worn out barrel or as a spare. With the 3-lug attachment point you can attach any suppressor or flash hider that is in-spec or you...
    HKP-18639
    $299.95
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    $299.95
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  • New - H&K 91/G3 (7.62x51/.308) Rear Sight - HKP-00361 HK91, G3 Rear Sight
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    HK91, G3 Rear Sight

    H&K Heckler & Koch

    $28.95
    HK German Factory Rear Sight Assembly With Drum Assembly - New Each rear sight is a brand new, old stock genuine Heckler & Koch rear sight. Comes as shown. Mounting hardware is offered separately. Now out of production, it's rare and hard to find in...
    HKP-00361
    $28.95
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    $28.95
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  • New - EBO HK 91/G3 (7.62x51/.308) Tungsten Full Auto Carrier - Made by EBO Under HK Contract - HKP-16572 HK91, G3 Bolt Carrier - Full Auto - Tungsten - Made by EBO Under HK Contract
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    HK91, G3 Bolt Carrier - Full Auto - Tungsten - Made by EBO Under HK Contract

    EBO

    $199.95
    Used HK Contract Greek (EBO) F/A Date Coded Tungsten Filled Bolt Carrier. HK German G3 F/A date coded bolt carrier with the tungsten inserts. The tungsten inserts and upgrade is ideal for those that are having bolt bounce issues or want the smoothest...
    HKP-16572
    $199.95
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    $199.95
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  • New - RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug - HKP-01764 HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug
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    HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug

    RCM

    $149.95
    RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug This is the only US-made non-threaded barrel that uses the same steel and Cold Hammer Forged (CHF) process as Heckler & Koch. Precision-milled to the latest MP5KN PDW specifications with...
    HKP-01764
    $149.95
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    $149.95
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  • New - H&K MP5 A3 Retractable Buttstock Bushing - HKP-16405 HK MP5 Bushing - A3 Retractable Buttstock
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    HK MP5 Bushing - A3 Retractable Buttstock

    H&K Heckler & Koch

    $14.95
    HK MP5 A3 Retractable Stock Cap, Bushing- MP5 Navy Stock Newer 2 generation stock cap bushing for the factory MP5-N series of A3 stocks.Not for use on the 1st generation all metal (70-80's) A3 retractable stocks. Not for use on the 3rd generation of MP5...
    HKP-16405
    $14.95
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    $14.95
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  • New - CFG MP5, MP5K Low Profile Rear Sight Base Mount - 5 Slot - HKP-18235 HK MP5, MP5K Optic Mount - Low Profile - Rear - Picatinny
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    HK MP5, MP5K Optic Mount - Low Profile - Rear - Picatinny

    CFG

    $99.95
    CFG MP5, MP5K Low Profile Rear Sight Base Mount - 5 Slot This new offering is a neat low profile offering that allows the user to replace the rear sight and add an extremely low profile super robust picatinny optic mount to your HK MP5, MP5K firearm...
    HKP-18235
    $99.95
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    $99.95
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  • Out Of Stock
    New - H&K HK MR556/MR762/416/417 Flip Up Rear Sight- 3mm - HKP-01405 H&K HK MR556/MR762/416/417 Flip Up Rear Sight- 3mm H&K Heckler & Koch HKP-01405

    HK416, MR556, HK417, MR762 Folding Rear Sight - 3mm

    H&K Heckler & Koch

    $299.95
    Heckler and Koch 3mm Flip Up Rear Sight for HK416, MR556, HK417, MR762 HK factory quick-release flip-up rear sight for MR556, MR762, HK416, and HK417 platforms. This rear sight attaches directly to any standard Picatinny rail using HK’s push-button...
    HKP-01405
    $299.95
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  • HKP HK MP5, MP5K Dual 9mm Magazine Clamp Bundle - Turkish Contract HKP HK MP5, MP5K Dual 9mm Magazine Clamp Bundle - Turkish Contract
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    HKP HK MP5, MP5K Dual 9mm Magazine Clamp Bundle - Turkish Contract

    HKP HK Parts

    $99.95
    HKP HK MP5, MP5K Dual 9mm Magazine Clamp Bundle - Turkish Contract HKP dual mag clamp with two Turkish contract 30 round 9mm MP5 magazines.  Ideal for faster mag swaps and having two types of ammo (subs vs supers or FMJ's vs JHP's) ready to load...
    HKP-22492
    $99.95
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    $99.95
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  • RCM HK SP5K Spec Suppressed Bolt Group RCM HKP-22277 RCM HK SP5K Spec Suppressed Bolt Group RCM HKP-22277
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    HK SP5K Bolt Group - Suppressed - Full Auto - Spec

    RCM

    $409.95
    RCM HK SP5K Spec Suppressed Bolt Group- Full Auto The RCM SP5K Suppressed bolt group is expertly engineered for operating in full auto while suppressed. Although designed as a full-auto bolt group, it also functions perfectly in semi-auto receivers. This...
    HKP-22323
    $409.95
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    $409.95
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  • Out Of Stock
    New - H&K MR556/416/MR762/417 A7 Adaptive Battle Grip w/ Tool - RAL8000 - HKP-21963 HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - RAL8000

    HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - RAL8000

    H&K Heckler & Koch

    $129.95
    HK Heckler and Koch Adaptive Battle Grip with tool in RAL8000. Factory German adaptive pistol grip in RAL8000. Originally used on the HK416 A7, this grip fits a variety of H&K platforms. Compatible With: HK MR556 A1 HK MR556 A4 HK416 HK MR762...
    HKP-21963
    $129.95
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    $129.95
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