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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  • On Sale
    New - H&K HK MR556/MR223 Upper Receiver w/ F/A & Ejection Door - HKP-16950 HK MR556, MR223 Upper Receiver w/ F/A & Ejection Door
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    HK MR556, MR223 Upper Receiver w/ F/A & Ejection Door

    H&K Heckler & Koch

    Now: $625.46
    Was: $694.95
    New HK German Partially Pre-Assembled MR556/MR223 Upper Receiver Each unit comes just as shown with the F/A (forward assist) assembly and ejection port door assembly installed from the HK factory.  Compatible With: HK MR556 HK MR223 HK...
    Now: $625.46
    Was: $694.95
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    Now: $625.46
    Was: $694.95
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    On Sale
    New - Geissele HK MR556/416 14.5" Super Modular Rail System - FDE - HKP-16462 HK416, MR556 14.5" Super Modular Rail System - FDE

    HK416, MR556 14.5" Super Modular Rail System - FDE

    Geissele

    Now: $494.96
    Was: $549.95
    Geissele HK416, MR556 14.5" Modular Rail - Desert Dirt Color (DDC) 13.625" overall length Geissele HK 416, MR556 free float rail  with HK 416 14.5" barrel and MR 556 16.5" barreled upper. This is a direct replacement item for your HK MR556 and 14.5"...
    Now: $494.96
    Was: $549.95
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    Was: $549.95
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  • On Sale
    New - Magpul 5.56 NATO Mag Assist - 3 Pack - HKP-17320
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    HK 5.56 Magazine Assist - 3 Pack

    Magpul

    Now: $8.96
    Was: $9.95
    ORIGINAL MAGPUL® 5.56 NATO, 3 PACK When installed on the base of a 5.56x45 rifle magazine, the original Magpul provides improved speed and control during high stress, tactical magazine changes. Durable synthetic rubber loop with recessed rough...
    Now: $8.96
    Was: $9.95
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  • On Sale
    New - H&K G36/SL8 (5.56/.223) Cocking Handle - HKP-01853
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    HK G36, SL8 Cocking Handle

    H&K Heckler & Koch

    Now: $50.36
    Was: $55.95
    HK Cocking Handle For G36 & SL8 Bolt Carriers  
    Now: $50.36
    Was: $55.95
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    Was: $55.95
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  • On Sale
    New - H&K UMP (.40 S&W/.45 ACP/9mm) Firing Pin Retainer Pin - HKP-01894
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    HK UMP Firing Pin Retainer Pin - .40 S&W / .45 ACP / 9mm

    H&K Heckler & Koch

    Now: $7.16
    Was: $7.95
    HK UMP Firing Pin - Retainter Pin   This is the pin that trips the trip lever on the UMP lower.   Compatible With: HK UMP  
    Now: $7.16
    Was: $7.95
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    Now: $7.16
    Was: $7.95
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  • On Sale
    New - H&K Cocking Tube Extrusion - 12" Section - HKP-13487 HK Cocking Tube Extrusion - 12" Section
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    HK Cocking Tube Extrusion - 12" Section

    H&K Heckler & Koch

    Now: $49.46
    Was: $54.95
    H&K Factory Cocking Tube Extrusion 12" Section HK cocking tube section is perfect for custom HK cocking tube projects. Overall length is 12" long. All steel and ready for that custom project or custom build. Perfect for custom cocking tube...
    Now: $49.46
    Was: $54.95
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  • On Sale
    New - HKP HK 91/G3/MSG90 5 Round Magazine - Steel - (7.62x51/.308) - HKP-16250-M HK91, G3, PTR Magazine - 5 Round
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    HK91, G3, PTR Magazine - 5 Round

    HKP HK Parts

    Now: $63.96
    Was: $79.95
    HKP HK 91/G3/MSG90 5 Round Magazine - Steel - (7.62x51/.308) 5 Round German Steel 308 Magazine With US Made Floorplate (Counts as 1 US made Part for 922R compliance) For HK Rifles.This magazine is made by Heckler and Koch & converted to five rounds...
    Now: $63.96
    Was: $79.95
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  • On Sale
    New - HKP 9mm US Made Trigger Pack with Flat Trigger - 4 U.S. 922 Parts - HKP-18513 HK MP5, HK94, SP5 Trigger Pack - Flat Trigger -  9mm - 4 US Made 922r Parts
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    HK MP5, HK94, SP5 Trigger Pack - Flat Trigger - 9mm - 4 US Made 922r Parts

    HKP HK Parts

    Now: $239.96
    Was: $299.95
    HKP Zenith 9mm US Made Trigger Pack With Flat Trigger  Semi auto trigger pack complete with flat trigger installed. Completely assembled & ready to drop in. The remaining parts are all German HK Or US made parts to make up the rest of the...
    Now: $239.96
    Was: $299.95
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    Now: $239.96
    Was: $299.95
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  • On Sale
    New - RCM HK MP5 9mm Barrel - Non-Threaded 3-Lug - HKP-02040 HK MP5 Barrel - 9mm - 8.85" - 3 Lug
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    HK MP5 Barrel - 9mm - 8.85" - 3 Lug

    RCM

    Now: $134.95
    Was: $149.95
    RCM HK MP5 9mm Barrel - Non-Threaded 3-Lug Made from Cold Hammer Forged (CHF) steel, each high-quality barrel is processed with a durable nitride finish, similar to the treatment used by Sig Sauer. Precision-milled to the latest specifications with...
    Now: $134.95
    Was: $149.95
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  • On Sale
    New - AIM M-LOK Quick Detach Sling Swivel Mount - HKP-18589 M-LOK Sling Swivel Mount - Quick Detach
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    M-LOK Sling Swivel Mount - Quick Detach

    AIM

    Now: $22.49
    Was: $24.99
    M-LOK Quick Detach Sling Swivel Mount The Aim M-LOK® QD Sling Mount stud with QD swivel provides a front attachment point for your push button QD sling or sling with just strap. Includes: All necessary mounting hardware and wrenches Features: High...
    Now: $22.49
    Was: $24.99
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    Was: $24.99
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  • On Sale
    New - H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE - HKP-18500 H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE H&K Heckler & Koch HKP-18500
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    HK416, MR556, HK417, MR762 Rear Sight - Flip Up 2mm - FDE

    H&K Heckler & Koch

    Now: $402.25
    Was: $446.95
    H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE Attaches to any standard picatinny rail. No hardware needed as this is a self contained quick attach rear sight assembly. This unique HK designed sight features a quick & easy push button...
    Now: $402.25
    Was: $446.95
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    Now: $402.25
    Was: $446.95
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  • On Sale
    HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284 HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284
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    HK MP5 Barrel Retaining Pin - 5.015mm

    H&K Heckler & Koch

    Now: $13.46
    Was: $14.95
    H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel.  Compatible With:  HK MP5, SP5, MP5K,...
    Now: $13.46
    Was: $14.95
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