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 - B&T Assault Closed Tine Muzzle Device - HK416/MR556 - 1/2x28 - HKP-22217 Lee Sporting LS5 HK MP5K Complete Trigger Group Flat Trigger - Semi shelf - 3D-Printed Nylon - BLEMISHED Lee Sporting, Magpul HKP-20484-B
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    HK416, MR556 Muzzle Device - Assault - Closed Tine - 1/2x28

    B&T Brugger & Thomet

    $109.00
    B&T Assault Closed Tine Muzzle Device - HK416/MR556 - 1/2x28 Factory B&T 1/2x28 flash hider and suppressor adapter for 5.56 rifles. Includes: ROTEX flash hider Shim kit Rocksett pipette Features: Swiss-manufactured Threaded 1/2x28 High...
    HKP-22217
    $109.00
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    $109.00
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  • New - B&T HK 416 3 Prong Flash Hider - 1/2x28 - HKP-22216 HK416, MR556 Flash Hider - 3 Prong - Threaded 1/2x28
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    HK416, MR556 Flash Hider - 3 Prong - Threaded 1/2x28

    B&T Brugger & Thomet

    $100.00
    Brugger and Thomet Assault 3 Prong Flash Hider - 1/2x28 3-Prong muzzle device with 1/2x28 threading, designed to reduce muzzle flash and improve shooting performance. Features: High performance open tine hybrid Precision machined, DLC...
    HKP-22216
    $100.00
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    $100.00
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  • Used - H&K G36 (5.56/.223) 30 Round Magazine - LEO Marked - USED - HKP-22212 HK G36 Magazine - 30 Round - LEO Marked - USED
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    HK G36 Magazine - 30 Round - LEO Marked - USED

    H&K Heckler & Koch

    $195.99
    H&K G36 (5.56/.223) 30 Round Magazine - LEO Marked - USED CONDITION VARIES BY UNIT - SOLD INDIVIDUALLY HK German 30-round magazine, LEO marked, designed to perfectly fit all G36, G36K, G36C variants, and converted SL8's with the G36 magwell...
    HKP-22212
    $195.99
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    $195.99
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  • New - Nefarious Arms HK MR556 A3 & 416 A5 Barrel Nut - HKP-22082 HK416 A5, MR556 A3 Barrel Nut
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    HK416 A5, MR556 A3 Barrel Nut

    Nefarious Arms

    $39.95
    Nefarious Arms HK MR556 A3/416 A5 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option.  Meticulously crafted in the US to the highest quality standards...
    HKP-22082
    $39.95
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  • On Sale
    New - Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ Adapter - HKP-21770-M HK MP5 Dual Folding Stabilizer with Adapter - .22LR
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    HK MP5 Dual Folding Stabilizer with Adapter - .22LR

    HKP HK Parts / Strike Industries

    $249.95 - $269.95
    Strike Industries HK MP5 .22LR Dual Folding Stabilizer with Adapter The Strike Industries Dual Folding Stabilizer paired with the HKP MP5 .22LR picatinny adapter is one of the best options on the market for those looking for a light, compact folding...
    HKP-21770-M
    $249.95 - $269.95
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  • New - MI/HKP HK MP5 .22 LR Alpha Folding Brace/Stock Adapter - HKP-21515-M HK MP5 Alpha Folding Stock With Direct Fit Adapter - .22 LR
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    HK MP5 Alpha Folding Stock With Direct Fit Adapter - .22 LR

    MI Midwest Industries

    $419.95
    MI/HKP HK MP5 .22 LR Alpha Folding Brace/Stock Adapter The Midwest Industries alpha folding stock paired with the HK Parts picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your exact style...
    HKP-21515-M
    $419.95
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    $419.95
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  • New - RCM HK MP5 10mm Barrel - Threaded 9/16x24 - HKP-21158 HK MP5 Barrel - 10mm - Threaded 9/16x24 with 3 Lug
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    HK MP5 Barrel - 10mm - Threaded 9/16x24 with 3 Lug

    RCM

    $279.95
    RCM HK MP5 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5 with the RCM HK MP5 10mm Barrel. This barrel is precision engineered for superior accuracy and durability. This barrel features a 9/16x24 thread and includes a thread protector...
    HKP-21158
    $279.95
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    $279.95
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  • New - SL Magpul Housing Service - HKP-20614-M
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    SL Magpul Housing Service

    Magpul

    $49.95 - $129.95
    SL Magpul Housing Service Our SL Magpul Housing conversion service can be preformed to convert a MP5 style magpul housing into a MP5K  style housing. We can also convert them to be compatible with the push pin style receivers like a Factory HK MP5,...
    HKP-20614-M
    $49.95 - $129.95
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  • New - HKP HK MP5K SD Shroud and Handguard Combo - HKP-20950 HK MP5KSD Barrel Shroud and Handguard Combo
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    HK MP5KSD Barrel Shroud and Handguard Combo

    HKP HK Parts

    $289.95
    HK Parts HK MP5KSD Shroud and Handguard Combo The perfect items for those that are looking into doing a custom MP5K SD build. The finest MP5K SD shroud ever made or available. This will be the best combo set for a top notch fit and conversion finish...
    HKP-20950
    $289.95
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    $289.95
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  • On Sale
    New - GSG9 HK SP5 US Rear Stock w/ HK Parts Adapter - HKP-20662 HK SP5 Stock with HKP Adapter
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    HK SP5 Stock with HKP Adapter

    HKP HK Parts / GSG9

    Now: $189.95
    Was: $259.95
    GSG9 US Folding Stock with HK Parts Adapter for HK SP5 GSG9 US folding stock paired with an HK Parts SP5 adapter. Configured as a direct-fit stock assembly for the SP5 platform. Specifications: CNC machined adapter Solid billet aircraft-grade...
    HKP-20662
    Now: $189.95
    Was: $259.95
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    Now: $189.95
    Was: $259.95
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  • New - HKP HK G36K Forearm - FDE - HKP-19301 HK G36K Handguard - Heat Shield and Handstop - FDE
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    HK G36K Handguard - Heat Shield and Handstop - FDE

    HKP HK Parts

    $109.95
    HKP HK G36K Forearm With Hand Stop & Heat Shield HK G36K-length forearm, latest production style, with an integrated heat shield. This handguard includes a built-in hand stop, sling attachment points, and molded mounting locations for adding bottom,...
    HKP-19301
    $109.95
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    $109.95
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  • New - HK G36C Incomplete Gas Piston Rod - Black - HKP-17009
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    HK G36C Piston Rod - Incomplete

    H&K Heckler & Koch

    $49.95
    Heckler and Koch Incomplete Black Gas Piston Rod for HK G36C A must have item for HK G36C conversions from SL8's or for spares for your G36C. New HK German factory part. Compatible with: G36C
    HKP-17009
    $49.95
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    $49.95
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