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 - HKP MP5 40/10 Fake Suppressor/Barrel Extension - 3-Lug - HKP-00889
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    HK MP5 Barrel Extension / Faux Suppressor - 10mm / .40 S&W - 3 Lug

    HKP HK Parts

    $69.95
    HKP MP5 40/10 Fake Suppressor/Barrel Extension - 3-Lug This fake suppressor is used as a barrel extension to bring your H&K MP5 40/10 8.85" barrel to legal conforming standards of 16" so you do not have to register the weapon as an SBR. This fits...
    HKP-00889
    $69.95
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  • New - MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned - HKP-18055 MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned
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    MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned

    H&K Heckler & Koch

    $599.95
    MP5K Navy Style SEF Semi Trigger Group - C/P HK German manufactured parts. Each unit comes with the professionally converted SEF navy style SEF clipped & pinned housing and semi auto only German HK trigger pack. All trigger groups include a new 3rd...
    HKP-18055
    $599.95
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  • On Sale
    New - H&K MP5K/SP5K/SP89 Semi-Auto 3 Position Trigger Group- Clipped & Pinned - HKP-00186 HK MP5K/SP5K/SP89 Semi-Auto 3 Position Trigger Group- Clipped & Pinned
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    HK MP5K/SP5K/SP89 Semi-Auto 3 Position Trigger Group- Clipped & Pinned

    H&K Heckler & Koch

    Now: $1,289.95
    Was: $1,899.95
    Heckler and Koch MP5K, SP5K Semi Auto 3 Position Trigger Group - Clipped & Pinned Semi-automatic trigger group configured in a 3-position clipped and pinned housing. Provides the appearance of a factory 3-position configuration while retaining a...
    HKP-00186
    Now: $1,289.95
    Was: $1,899.95
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    Now: $1,289.95
    Was: $1,899.95
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  • New - H&K MP5 A3 Rear Stock Fork Section With Buttpad - HKP-01044
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    HK MP5 A3 Stock Fork Section With Buttpad

    H&K Heckler & Koch

    $429.95
    H&K MP5 A3 Stock Fork Section With Buttpad A common repair item as the buttpad can crack or break off with time or hard use. A hard-to-find item, available here at HK Parts. For use with new style A3 German stocks, NOT the older style stocks...
    HKP-01044
    $429.95
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    $429.95
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  • On Sale
    New - Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - HKP-18881 CZ Scorpion Binary Trigger - Curved - BFSIII
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    CZ Scorpion Binary Trigger - Curved - BFSIII

    FA Franklin Armory

    Now: $449.99
    Was: $495.95
    Franklin Armory CZ Scorpion - BFSIII - Binary Trigger The BFSIII for CZ Scorpion is a 3-Position Trigger. In position 3 it will fire 1 round on Pull and 1 round on Release. This makes it the fastest semi-automatic trigger on the market. The BFSIII is...
    HKP-18881
    Now: $449.99
    Was: $495.95
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    Now: $449.99
    Was: $495.95
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  • New - RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 - HKP-17762 HK MP5, HK94, HK34 Barrel - 9mm - 12.7"- Threaded 1/2x28
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    HK MP5, HK94, HK34 Barrel - 9mm - 12.7"- Threaded 1/2x28

    RCM

    $204.95
    RCM MP5, HK34, HK94 Barrel - 9mm - 12.7"- Threaded 1/2x28   Each barrel is hand-selected from the finest cold hammer forged (CHF) 41V45 steel blanks, expertly profiled and chambered in the desirable 16 flute chamber profile. Finished with a...
    HKP-17762
    $204.95
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    $204.95
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  • New - HKP ACE Adapter for HK MP5, 93, 33 - HKP-18504 HKP ACE Adapter for HK MP5, 93, 33
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    HKP ACE Adapter for HK MP5, 93, 33

    HKP HK Parts

    $99.95
    ACE Adapter for HK MP5 and HK 93 Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive firearm. This is the finest ACE adapter available period...
    HKP-18504
    $99.95
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    $99.95
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  • HK MP5 Cocking Handle - Knurled - Enhanced - UTG Handguard Compatible HK MP5 Cocking Handle - Knurled - Enhanced - UTG Handguard Compatible
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    HK MP5 Cocking Handle - Knurled - Enhanced - UTG Handguard Compatible

    HKP HK Parts

    $39.95
    HKP HK MP5 Enhanced Knurled Cocking Handle - UTG Handguard Compatible Enhanced extended cocking handle designed for HK MP5 pattern firearms and compatible with UTG handguards. The knurled profile provides increased surface area for improved charging...
    HKP-22516
    $39.95
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    $39.95
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  • HK416, MR556 Upper Receiver - Stripped - No Forward Assist HK416, MR556 Upper Receiver - Stripped - No Forward Assist
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    HK416, MR556 Upper Receiver - Stripped - No Forward Assist

    H&K Heckler & Koch

    $489.99
    HK416, MR556 Upper Receiver - Stripped - No Forward Assist Genuine HK HK416 upper receiver designed for HK416 and MR556 rifle platforms. This stripped receiver does not include a forward assist or ejection port door. Compatible With HK416, MR556 MR223
    HKP-22506
    $489.99
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    $489.99
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  • On Sale
    HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1 HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1
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    HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1

    HKP HK Parts

    Now: $72.95
    Was: $98.95
    HKP HK MP5, HK MP5K Aimpoint ACRO P1 Mount Low-profile mount with a direct Aimpoint ACRO mounting interface. The smallest mount in the market with a sleek and clean overall look. Full co-witness, this mount is the best in the market with the best 3-piece...
    HKP-99354
    Now: $72.95
    Was: $98.95
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    Now: $72.95
    Was: $98.95
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  • HK91, G3 Magazine Release Set - USED HK91, G3 Magazine Release Set - USED
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    HK91, G3 Magazine Release Set - USED

    H&K Heckler & Koch

    $24.95
    Heckler and Koch Magazine Release Set (Left to Right) for HK91 and G3 HK-manufactured, used magazine release set for HK .308 pattern rifles. Complete left-to-right mag catch assembly with both push-button and paddle controls. Expect finish wear and...
    HKP-22466
    $24.95
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    $24.95
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  • WOOX M-LOK Rail Covers - Teardrop - GEN2 WOOX M-LOK Rail Covers - Teardrop - GEN2
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    WOOX M-LOK Rail Covers - Teardrop - GEN2

    WOOX

    $58.95 - $78.95
    WOOX GEN2 Teardrop M-LOK Rail Covers The teardrop M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection, while bringing that signature wood look to your build. The GEN2 Teardrop pattern uses...
    HKP-22462-M
    $58.95 - $78.95
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