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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  • Out Of Stock
    New - H&K HK MR556 A4 16.5" Barrel - HKP-21931 HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"

    HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"

    H&K Heckler & Koch

    $389.95
    H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler & Koch’s exacting standards, it features a...
    HKP-21931
    $389.95
    Out Of Stock
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    $389.95
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  • On Sale
    New - HK MP5 Trunnion - Gunsmith Special - HKP-99089 HK MP5 Trunnion - Gunsmith Special
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    HK MP5 Trunnion - Gunsmith Special

    USA

    Now: $24.95
    Was: $54.95
    HK MP5 Trunnion - Gunsmith Special US made HK MP5 trunnions sold as-is. Will require work before being functional. We recommend the work be performed by a professional gunsmith. The condition will vary from part-to-part vs. the pictured unit. Compatible...
    HKP-99089
    Now: $24.95
    Was: $54.95
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  • On Sale
    New - Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ Adapter - HKP-21770-M HK MP5 .22LR Dual Folding Stabilizer w/ Adapter
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    HK MP5 .22LR Dual Folding Stabilizer w/ Adapter

    HKP HK Parts / Strike Industries

    $249.95 - $269.95
    Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ 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 stock...
    HKP-21770-M
    $249.95 - $269.95
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  • On Sale
    New - HK MP5 QD End Cap with Buffer - Black - BLEMISHED - HKP-20118-B HK MP5 QD End Cap with Buffer - Black - BLEMISHED
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    HK MP5 QD End Cap with Buffer - Black - BLEMISHED

    HKP HK Parts

    Now: $49.95
    Was: $99.95
    HK MP5 QD End Cap with Buffer - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. With this MP5 QD end cap upgrade you will get a heavier buffer...
    HKP-20118-B
    Now: $49.95
    Was: $99.95
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  • Out Of Stock
    New - Nefarious Arms HK 416/MR556 14.5" A5 Barrel - HKP-21590 HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    Nefarious Arms

    $594.95
    Nefarious Arms HK 416/MR556 14.5" A5 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting.  Grab this expertly crafted barrel for your next SBR or pistol build.  Compatible With: HK 416 (A5,...
    HKP-21590
    $594.95
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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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  • New - Blitzkrieg PTR Flat Tip Front Sight Gen 2 - Orange - HKP-21103 PTR Flat Tip Front Sight - Gen 2 - Orange
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    PTR Flat Tip Front Sight - Gen 2 - Orange

    Blitzkrieg Components

    $84.95
    Blitzkrieg PTR Flat Tip Front Sight Gen 2 - Orange The Blitzkrieg Gen 2 HK-style front sight delivers a fast and precise aiming point with its conventional flat-tipped post and bright orange stripe. Designed for easy installation, it utilizes a roll pin...
    HKP-21103
    $84.95
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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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  • New - HKP Single Point Leather Sling - OD Green - HKP-20163 HK Single Point Leather Sling - OD Green
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    HK Single Point Leather Sling - OD Green

    HKP HK Parts

    $49.95
    Single Point Leather Sling - OD Green Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German...
    HKP-20163
    $49.95
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  • New - GSG9 HK G36C Forearm - Black - HKP-18216 GSG9 HK G36C Handguard
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    GSG9 HK G36C Handguard

    GSG9

    $126.95
    HK G36C Handguard With Heat Shield & Hand Stop New GSG9 manufactured forearm with heat shield & hand stop fits all HK G36C's or SL8/G36 conversions sized for the G36C barrel. Each unit also features the hand stop with sling attachement points...
    HKP-18216
    $126.95
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    $126.95
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  • New - H&K HK G36 Complete Full Auto Slide - HKP-16360 HK G36 Complete Full Auto Slide
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    HK G36 Complete Full Auto Slide

    H&K Heckler & Koch

    $24.95
    H&K HK G36 Complete Full Auto Slide  
    HKP-16360
    $24.95
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  • Out Of Stock
    New - B&T Vertical Fixed Unigrip - Black - HKP-18043

    B&T Vertical Fixed Unigrip

    B&T Brugger & Thomet

    $119.00
    B&T Vertical Fixed Unigrip Swiss made B&T vertical for-end grip for picatinny. Made of aluminum Will fit all mil-spec picatinny rails. Measures long. Specifications: Condition: Factory new Color: Black Material: Polymer/alloy
    HKP-18043
    $119.00
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    $119.00
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