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 - H&K MR556 A4 16.5″ 5.56 M-LOK Upper Receiver Kit - HKP-21909 MR556 A4 Upper Receiver Kit - 16.5″ - 5.56 - M-LOK

    MR556 A4 Upper Receiver Kit - 16.5″ - 5.56 - M-LOK

    H&K Heckler & Koch

    Now: $1,616.36
    Was: $1,939.00
    H&K MR556 A4 16.5″ 5.56 M-LOK Upper Receiver Kit 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 system utilizes a piston...
    Now: $1,616.36
    Was: $1,939.00
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    Now: $1,616.36
    Was: $1,939.00
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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

    Now: $1,601.96
    Was: $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...
    Now: $1,601.96
    Was: $1,779.95
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    Now: $1,601.96
    Was: $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

    Now: $1,799.06
    Was: $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...
    Now: $1,799.06
    Was: $1,998.95
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    Now: $1,799.06
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    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

    Now: $1,988.76
    Was: $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...
    Now: $1,988.76
    Was: $2,485.95
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    Now: $1,988.76
    Was: $2,485.95
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    New - HKP 416 10.4" 5.56 Complete Upper Receiver Assembly - HKP-17662 HK416 Upper Receiver Kit - 10.4" - 5.56

    HK416 Upper Receiver Kit - 10.4" - 5.56

    HKP HK Parts

    Now: $1,988.76
    Was: $2,485.95
    HKP 416 10.4" 5.56 Complete Upper Kit Complete Each kit includes the complete upper assembly, bolt group, tungsten buffer, & high-reliability SS recoil spring. This upper kit is a complete gas piston HK 416 style upper assembly that will drop on your...
    Now: $1,988.76
    Was: $2,485.95
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    Now: $1,988.76
    Was: $2,485.95
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    New - H&K HK 416 A5 Bolt Carrier Complete - HKP-21500 HK416 A5 Bolt Carrier - Complete
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    HK416 A5 Bolt Carrier - Complete

    H&K Heckler & Koch

    Now: $1,750.50
    Was: $2,349.95
    German H&K HK 416 A5 Bolt Carrier Complete Get your hands on that critical puzzle piece for your factory-correct 416A5 build.  Fully assembled and ready to drop into your uper receiver.  Bolt carriers may be marked ".223 Rem" or "5.56 x 45"...
    Now: $1,750.50
    Was: $2,349.95
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    New - H&K 416A5 RAL 8K Stripped Upper Receiver - HKP-18787 HK416 A5 Stripped Upper Receiver - RAL8000
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    HK416 A5 Stripped Upper Receiver - RAL8000

    H&K Heckler & Koch

    Now: $1,403.96
    Was: $1,559.95
    HK German Un-Assembled - Stripped HK416 A5 Upper Receiver - RAL 8K Brand new factory German RAL 8000 HK416A5 upper receiver. Compatible With: HK416 HK MR556 HK MR223 Looking for a matching lower for your build?  STS416 A5 LOWER - Specialized...
    Now: $1,403.96
    Was: $1,559.95
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    HK 416 A5 Bolt Carrier H&K Heckler & Koch HKP-22328 HK 416 A5 Bolt Carrier H&K Heckler & Koch HKP-22328
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    HK416 A5 Bolt Carrier

    H&K Heckler & Koch

    Now: $1,497.95
    Was: $1,997.95
    H&K HK416 A5 Bolt Carrier Factory HK416 A5 full auto bolt carrier.  This carrier is backwards compatible with earlier HK416 A1 and A3 variants. Features the updated captive firing pin retaining system. Compatible With: HK416 A5 HK416 A1 HK416...
    Now: $1,497.95
    Was: $1,997.95
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