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 - Nefarious Arms HK 416 Reaction Rod - HKP-21272 HK416 Reaction Rod
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    HK416 Reaction Rod

    Nefarious Arms

    $124.95
    Nefarious Arms - Reaction Rod - HK416  The Nefarious Arms HK416 Reaction Rod is used to securely hold the upper receiver in a bench vise so that work may be performed on the muzzle device. It is inserted through the rear of the upper receiver to...
    HKP-21272
    $124.95
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  • New - HKP HK MP5 .22LR Brace/Stock Adapter - HKP-20795-M HKP HK MP5 .22LR Brace/Stock Adapter
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    HKP HK MP5 .22LR Brace/Stock Adapter

    HKP HK Parts

    $99.95 - $109.95
    HKP HK MP5 .22LR Brace/Stock Adapter This is the perfect folding stock adapter to replace the polymer end cap on your MP5 .22.  CNC machined from a solid billet of aircraft grade aluminum and cerakoted for a durable finish.  Compatible with any...
    HKP-20795-M
    $99.95 - $109.95
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  • New - HKP HK UMP 2 Position Lower Grip Frame - FDE - HKP-19384 HK UMP 2 Position Lower Grip Frame
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    HK UMP 2 Position Lower Grip Frame

    HKP HK Parts

    $184.95
    HKP HK UMP 2 Position Lower Grip Frame Lower grip frame configured for two-position operation. Designed for use with user-supplied internals and suitable for replacement or build use on HK UMP pattern firearms. Commonly used for USC to UMP conversion...
    HKP-19384-M
    $184.95
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  • HK UMP (9mm) 30 Round Magazine HK UMP (9mm) 30 Round Magazine
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    HK UMP (9mm) 30 Round Magazine

    H&K Heckler & Koch

    $62.95
    HK German UMP 9mm 30 Round Factory Magazine The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP/USC builds
    HKP-00608
    $62.95
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  • Out Of Stock
    New - H&K Burst Eccentric Bushing - HKP-02647 HK Burst Eccentric Bushing

    HK Burst Eccentric Bushing

    H&K Heckler & Koch

    $54.95
    HK Burst Eccentric Bushing HK German factory part is found in all HK burst trigger packs. This part is in between the hammer shank hole and the inside of the trigger box hammer axle spacer. This part is one of the most common wear...
    HKP-02647
    $54.95
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  • HK MP5, SP5K Extractor Spring - 9mm HK MP5, SP5K Extractor Spring - 9mm
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    HK MP5, SP5K Extractor Spring - 9mm

    MKE

    $6.95
    MKE HK MP5, MP5K - Extractor Spring - 9mm Extractor spring for all 9mm HK variants including clones. This spring is the #1 repair & replacement item for the MP5 and MP5K family of firearms. Compatible With: HK MP5 HK MP5K HK SP5 HK SP5K HK94 HK...
    HKP-22481
    $6.95
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  • Out Of Stock
    New - Zenith 30 Round HK MP5 Monkey Subsonic Labeled Magazine - HKP-20916 HK MP5 Magazine - Monkey Subsonic Labeled - 30 Round

    HK MP5 Magazine - Monkey Subsonic Labeled - 30 Round

    Zenith

    $43.95
    Zenith 30 Round HK MP5 Monkey Subsonic Labeled Magazine Easily identify a magazine loaded with supersonic rounds versus a magazine loaded with subsonic rounds. Features: Durable electro-plated black finish for exceptional corrosion resistance All steel...
    HKP-20916
    $43.95
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  • New - Franklin Armory HK MP5-AR Binary Trigger Group - HKP-20642 HK MP5, HK94, SP5 Binary Trigger Group - Ambi - BFSIII -  9mm
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    HK MP5, HK94, SP5 Binary Trigger Group - Ambi - BFSIII - 9mm

    FA Franklin Armory

    $849.95
    Franklin Armory BFSIII HK-C1 - Trigger Group For  MP5, SP5 Our new and improved HK-AR Navy ambidextrous lower housing is now paired with Franklin Armory binary trigger pack and a Magpul MOE grip to make this complete MP5-AR style binary trigger...
    HKP-20642
    $849.95
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  • New - GSG9 HK G36C Gas Piston Rod Spring Assembly - Black - HKP-18250 HK G36C Gas Piston Rod and Spring - Complete Assembly
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    HK G36C Gas Piston Rod and Spring - Complete Assembly

    GSG9

    $82.95
    HK German G36C Gas Piston Rod & Spring Assembly Complete A must have item for HK G36C conversions from SL8's or for spares for your G36C MG. A high wear and replacement part and a must have for spare parts.
    HKP-18250
    $82.95
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  • Out Of Stock
    New - Geissele HK MR556 Trigger - HKP-16464 HK416, MR556 2-Stage Trigger

    HK416, MR556 2-Stage Trigger

    Geissele

    $489.95
    Geissele Automatic's two stage trigger for the HK MR 556 rifle. The HK MR556 trigger is similar to Geissele's SSA with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK 416's. Each Trigger comes with full installation...
    HKP-16464
    $489.95
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  • New - H&K HK MR556/762/416/417 Bolt Catch Spring - HKP-16661
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    HK416, HK417, MR556, MR762 Bolt Catch Spring

    H&K Heckler & Koch

    $6.95
    H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417
    HKP-16661
    $6.95
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  • New - H&K HK G36C/G36K Gas Piston - HKP-00352
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    HK G36C, G36K Gas Piston

    H&K Heckler & Koch

    $99.95
    HK German G36C & G36K Gas Piston - Complete New HK German factory G36C and G36K gas piston complete with sealing rings installed. A great spare or replacement part. This is also a popular part for those upgrading to an SL8 to G36K or C barrel length...
    HKP-00352
    $99.95
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