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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  • HK MP5, MP5K Folding Stock or Brace - HDA3 HK MP5, MP5K Folding Stock or Brace - HDA3
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    HK MP5, MP5K Folding Stock or Brace - HDA3

    Haga Defense

    $349.95
    HDA3 Stock and Brace for MP5K, SP5K The HDA3 is a modular, USA-made stock and brace system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth...
    HKP-22355-M
    $349.95
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  • On Sale
    HK21 FMP Complete Build Kit- Matching Numbers - MM Barrel HKP HK Parts HKP-21626-1 HK21 FMP Complete Build Kit- Matching Numbers - MM Barrel HKP HK Parts HKP-21626-1
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    HK21 FMP Complete Build Kit - Non Matching Numbers - MM Barrel

    FMP HK CONTRACT

    Now: $3,849.95
    Was: $4,294.97
    HK21 Complete Build Kit- Non Matching Numbers HK Parts brings you another exhaustive parts kit. Our HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for belt-fed action. We also included our own hanger with a...
    HKP-22378
    Now: $3,849.95
    Was: $4,294.97
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    Now: $3,849.95
    Was: $4,294.97
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  • New - HK MP5K Magpul UCS Stock with Adapter - HKP-22198 HK MP5K Ultra Carbine Stock and Adapter
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    HK MP5K Ultra Carbine Stock and Adapter

    HKP HK Parts / Magpul

    $312.95
    HK MP5K Magpul UCS Stock with Adapter The HK Parts UCS adapter and stock for the MP5K pairs our proven stock adapter with Magpul's UCS stock for a compact, adjustable configuration. The UCS stock features a reversible hinge for left and right folding...
    HKP-22198
    $312.95
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    $312.95
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  • New - H&K MR556 A4/416 A5 Gas Block Spring - HKP-22060 HK416 A5, MR556 A4 Gas Block Spring
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    HK416 A5, MR556 A4 Gas Block Spring

    H&K Heckler & Koch

    $19.95
    HK Heckler and Koch HK416 A5, MR556 A4 Gas Block Spring German-made gas block spring for the HK MR556 A4 and HK416 A5. Compatible With: MR556 A4 HK416 A5
    HKP-22060
    $19.95
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    $19.95
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  • New - SB Tactical SBA3 5 Position Adjustable Stabilizing Brace - HKP-21927 HK416, MR556 Stabilizing Brace - SBA3 5 Position Adjustable
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    HK416, MR556 Stabilizing Brace - SBA3 5 Position Adjustable

    SB Tactical

    $109.95
    SB Tactical SBA3 5 Position Adjustable Stabilizing Brace The SBA3™ is a minimalist, 5-position adjustable stabilizing brace designed for platforms that accept a mil-spec carbine receiver extension (not included). It features an integral...
    HKP-21927
    $109.95
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    $109.95
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  • New - Magpul M-Lok Offset Light / Optic Mount - HKP-21875 M-Lok Optic Mount - Offset Light
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    M-Lok Optic Mount - Offset Light

    Magpul

    $36.95
    Magpul M-Lok Offset Light / Optic Mount - Aluminum The M-LOK Offset Light/Optic Mount, Aluminum provides the user with an ambidextrous platform to mount weapons lights or optics at both the 11 and 1 o'clock positions on M-LOK compatible hand guards and...
    HKP-21875
    $36.95
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    $36.95
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  • HK MP5K, AP5-P Trigger Group HK MP5K, AP5-P Trigger Group
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    HK MP5K, AP5-P Trigger Group

    MKE

    $479.95
    Century AP5-P, AP5-M Trigger Group This trigger group serves as a direct replacement for AP5-P, AP5-M, Zenith clones, and factory MP5K receivers. For customers needing compatibility with shelfed receivers, we also offer a clip-pin service as an optional...
    HKP-21668
    $479.95
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    $479.95
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  • Out Of Stock
    New - B&T 5.56 Rotex-SF Titanium HUB Adapter - HKP-21713 B&T 5.56 Rotex-SF Titanium HUB Adapter

    B&T 5.56 Rotex-SF Titanium HUB Adapter

    B&T Brugger & Thomet

    $275.00
    B&T 5.56 Rotex-SF Titanium HUB Adapter The B&T Rotex-SF HUB is a durable mounting system compatible with all 1.375x24TPI "HUB" suppressors. The HUB easily threads into compatible suppressors and can be secured with a spanner wrench or...
    HKP-21713
    $275.00
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    $275.00
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  • New - HKP MP5K 10mm Pistol Build Kit - HKP-21533 HK MP5K Parts Kit - 10mm - Pistol Build
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    HK MP5K Parts Kit - 10mm - Pistol Build

    HKP HK Parts

    $1,889.95
    HKP MP5K 10mm Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and suppressors...
    HKP-21533
    $1,889.95
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    $1,889.95
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  • New - B&T G36 (5.56/.223) Flash Hider with Interface for Rotex - HKP-21531 HK G36 Flash Hider with Interface for Rotex
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    HK G36 Flash Hider with Interface for Rotex

    B&T Brugger & Thomet

    $144.99
    B&T G36 (5.56/.223) Flash Hider with Interface for Rotex Compatible With: HK G36 HK93, HK33 5.56/.223 firearms threaded 15X1 RH Specifications: Made in Switzerland Threaded 15x1 RH Does not include face shims
    HKP-21531
    $144.99
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    $144.99
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  • On Sale
    New - Magpul HK MP5 Adapter Brace with Stock - HKP-21402-M HK MP5 Stock With Direct Fit Adapter
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    HK MP5 Stock With Direct Fit Adapter

    HKP HK Parts / Magpul

    Now: $149.95
    Was: $189.95
    HK MP5 Stock With Direct Fit Adapter MP5 DT Magpul stock ready to install on any in-spec MP5 receiver or clone. We take our AR MP5 Adapter and attach it onto a mil-spec buffer tube before combining it with the new Magpul DT Carbine stock. This is a great...
    HKP-21402-M
    Now: $149.95
    Was: $189.95
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    Now: $149.95
    Was: $189.95
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  • New - B&T Angled Foregrip - Picatinny Mount - Universal - HKP-21392 B&T Angled Foregrip - Picatinny
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    B&T Angled Foregrip - Picatinny

    B&T Brugger & Thomet

    $71.99
    B&T Angled Foregrip - Coyote Tan - Picatinny Mount For those shooters who prefer an angled foregrip, this grip is the perfect solution. The lugs at the end of the grip assure a firm rest for the supporting hand. The grip can be mounted easily onto...
    HKP-21392
    $71.99
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    $71.99
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