HK416 / MR556 Series

HK416 / MR556 Series

Our extensive collection boasts a wide array of HK MR556 and HK 416 parts, including precision HK MR556 Barrels and durable HK 416 Stocks. Elevate your rifle's functionality with HK 416 Handguards and HK MR556 Triggers, designed for the discerning shooter seeking top-tier performance.

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  • New - JMAC Universal M-LOK Skeleton Forward Grip - HKP-21240 M-LOK Foregrip - Skeleton
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    M-LOK Foregrip - Skeleton

    JMAC Customs

    $89.95
    JMAC Universal M-LOK Skeleton Forward Grip  Can be used as a forward grip or a handstop! Features: Reversible and Lightweight M-LOK Compatible (Requires 2 slots) Fits in and across M-LOK Slots Includes mounting hardware 7075 T6 Aluminum Hard Coat...
    $89.95
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    New - H&K HK MR556 M-LOK 16.5" Upper Receiver Assembly - Black - HKP-17366 MR556 Upper Receiver Kit -16.5" - M-LOK

    MR556 Upper Receiver Kit -16.5" - M-LOK

    H&K Heckler & Koch

    $1,779.95
    New HK Factory German MR556 Upper Kit with M-LOK forearm Includes: Complete MR556 upper receiver with M-LOK forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL required as the...
    $1,779.95
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    New - H&K MR556 A4 11″ 5.56 M-LOK Upper Receiver Kit - HKP-21910 HK MR556 A4 Upper Receiver Kit - 11"-  M-LOK

    HK MR556 A4 Upper Receiver Kit - 11"- M-LOK

    H&K Heckler & Koch

    $1,998.95
    H&K Heckler & Koch MR556 Upper Receiver Kit A4 -11″ - M-LOK  This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HK’s piston and pusher rod system. This...
    $1,998.95
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  • New - H&K HK MR762/417 Castle Receiver Extension Nut For Buffer Tube - Black - HKP-16768 HK417, MR762 Castle Receiver Extension Nut for Buffer Tube
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    HK417, MR762 Castle Receiver Extension Nut for Buffer Tube

    H&K Heckler & Koch

    $44.95
    H&K HK MR762/417 Castle Receiver Extension Nut For Buffer Tube - Black New HK German manufacture and the factory correct offering with the proper installation screws and staking guides. Compatible With: HK MR762 HK 417
    $44.95
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  • New - Surefire (5.56/.223) Muzzle Brake/Suppressor Adapter - Threaded 1/2x28 - HKP-17378 HK416, MR556 Adapter - Muzzle Brake or Suppressor - 1/2x28
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    HK416, MR556 Adapter - Muzzle Brake or Suppressor - 1/2x28

    Surefire

    $165.00
    Surefire (5.56/.223) Muzzle Brake/Suppressor Adapter - Threaded 1/2x28 The SureFire muzzle brake is designed for M4, M16, HK 416, and MR556 weapons with 1/2-28 muzzle threads. It significantly reduces recoil impulse and muzzle rise, enhancing...
    $165.00
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  • New - H&K HK MR556/416 Threaded Pin for Buttstock Insert - HKP-16604 HK416, MR556 Threaded Pin for Buttstock Release Inserts - E1, E2
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    HK416, MR556 Threaded Pin for Buttstock Release Inserts - E1, E2

    H&K Heckler & Koch

    $9.99
    H&K HK MR556/416 Threaded Pin for E1/E2 Buttstock Release Lever Insert New HK German manufactured E1/E2 stock release and tightening screw that takes the slack and slop out of the stock when in desired position. Compatible With: HK MR556 HK 416
    $9.99
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  • Out Of Stock
    New - HKP HK 416 11.5" 5.56 Complete Upper Receiver Assembly - HKP-21539 HK416 Upper Receiver Kit - 11.5" - 5.56

    HK416 Upper Receiver Kit - 11.5" - 5.56

    HKP HK Parts

    $2,485.95
    HKP HK 416 11.5" 5.56 Complete Upper Kit Complete This top-tier assembly seamlessly fits onto your mil-spec lower or an STS 416 lower, providing the perfect solution for those seeking an 11.5" 416 style upper without breaking the bank. Each unit is...
    $2,485.95
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    New - H&K 45mm Picatinny Rail Cover - Black - Universal - HKP-18857 HK 45mm Picatinny Rail Cover - Universal

    HK 45mm Picatinny Rail Cover - Universal

    H&K Heckler & Koch

    $14.95
    H&K 45mm Picatinny Rail Cover - Universal New factory HK rubberized picatinny rail cover. Specifications: Rail cover dimensions: 45x26x7 mm Compatible With: HK picatinny rails Other Picatinny railed applications
    $14.95
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  • New - H&K HK MR556/MR762/417/416 Trigger Axle - HKP-16623
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    HK416, HK417, MR556, MR762 Trigger Axle

    H&K Heckler & Koch

    $19.95
    H&K HK MR556/MR762/417/416 Trigger Axle Axle for Trigger. Compatible With: HK MR556 HK 416 HK MR762 HK 417
    $19.95
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  • New - H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever - HKP-15433 HK416, MR556, MR762 Semi Auto Axle For Selector Lever
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    HK416, MR556, MR762 Semi Auto Axle For Selector Lever

    H&K Heckler & Koch

    $44.95
    H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever HK German safe, semi selector axle for the MR 556 & HK 416 family of firearms. All steel construction. Compatible With: HK MR556 HK 416 HK MR762
    $44.95
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    New - HKP HK MR556/MR762/416/417 Front Diopter Sight - HKP-17716 HK416, MR556, HK417, MR762 Front Diopter Sight

    HK416, MR556, HK417, MR762 Front Diopter Sight

    HKP HK Parts

    $89.95
    HK MR556, HK416 & MR762 & HK 417 Fixed Front Sight Assembly - USNew US Made HK style front fixed sight for use with the rear diopter style rear sight options. Can also be used on some other AR-15/M-16 applications.New US Manufacture. Complete...
    $89.95
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  • New - H&K HK MR556/MR762/416/417 German E2 Concave Butt Pad - HKP-00050 HK416, MR556 Butt Pad - German E2 -Concave
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    HK416, MR556 Butt Pad - German E2 -Concave

    H&K Heckler & Koch

    $55.95
    H&K HK MR556/MR762/416/417 German E2 Concave Butt Pad Can be added as an option on the HK E1 416/417 stock. Providing you an option to use either the concave or convex style buttpads for different mission requirements. Compatible With: HK MR556 HK...
    $55.95
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