Barrels

Barrels

Premium HK Barrels and Firearm Parts to upgrade your HK firearm with precision-engineered, CHF (Cold Hammer Forged) barrels, and premium parts built for reliability, unparalleled accuracy, and long-term performance. Our OEM and aftermarket HK barrels deliver exceptional quality and fit for pistols, rifles, and submachine guns.

Key Features:

  • CHF (Cold Hammer Forged) construction for unmatched durability and precision
  • Engineered for superior accuracy and shot consistency
  • Made from premium, corrosion-resistant materials
  • Designed for performance, competition, and tactical applications
  • OEM fit and easy installation across multiple HK platforms

Enhance your HK pistol or rifle with the best high-performance CHF barrels engineered for excellence, trusted by professionals  and firearm enthusiasts.

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  • Out Of Stock
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    New - HKP HK MR556/416 Upper 8" 416C Style Conversion Kit - HKP-18629 HK416, MR556 Upper 8" 416C Style Conversion Kit

    HK416, MR556 Upper 8" 416C Style Conversion Kit

    HKP HK Parts

    Now: $1,028.76
    Was: $1,285.95
    Upper Conversion Kit for HK416 and MR556 8 inch barrel - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 8" barrel conversion kit for 416 or MR556. Each conversion kit...
    Now: $1,028.76
    Was: $1,285.95
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    Now: $1,028.76
    Was: $1,285.95
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  • On Sale
    New - H&K MR556 A4/416 A5 1.3mm Gas Vent Screw - HKP-22044
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    HK416 A5, MR556 A4 Gas Vent Screw - 1.3mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.3mm Gas Vent Screw The 1.3mm gas vent screw is the standard size installed at the factory on the MR556 A4. Compatible With: HK MR556 A4
    Now: $26.95
    Was: $29.95
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  • On Sale
    New - H&K MR556 A4/416 A5 1.2mm Gas Vent Screw - HKP-22043
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    HK416 A5, MR556 A4 Gas Vent Screw - 1.2mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.2mm Gas Vent Screw German 1.2mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    Now: $26.95
    Was: $29.95
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    New - H&K MR556 A4/416 A5 1.1mm Gas Vent Screw - HKP-22041
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    HK416 A5, MR556 A4 Gas Vent Screw - 1.1mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.1mm Gas Vent Screw German 1.1mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    Now: $26.95
    Was: $29.95
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  • On Sale
    New - H&K MR556 A4/416 A5 1.0mm Gas Vent Screw - HKP-22040
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    HK416 A5, MR556 A4 Gas Vent Screw - 1.0mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.0mm Gas Vent Screw German 1.0mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5
    Now: $26.95
    Was: $29.95
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  • On Sale
    New - H&K USP40T/VP40 Thread Protector - HKP-21994 HK VP40, USP40T Thread Protector - 14.5x1mm LH
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    HK VP40, USP40T Thread Protector - 14.5x1mm LH

    H&K Heckler & Koch

    Now: $27.86
    Was: $30.95
    H&K USP40T/VP40T Thread Protector The HK thread protector is a must have accessory when a sound suppressor or muzzle attachment is not mounted on your tactical pistol. The thread protector will prevent damages to the threads and crown. Compatible...
    Now: $27.86
    Was: $30.95
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    Now: $27.86
    Was: $30.95
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  • On Sale
    New - H&K MR762 A4 1.5mm Gas Vent Screw - HKP-21953
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    HK MR762 A4 Gas Vent Screw - 1.5mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR762 A4 1.5mm Gas Vent Screw German 1.5mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    Now: $26.95
    Was: $29.95
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  • On Sale
    New - H&K MR762 A4 1.7mm Gas Vent Screw - HKP-21948
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    HK MR762 A4 Gas Vent Screw - 1.7mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR762 A4 1.7mm Gas Vent Screw German 1.7mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    Now: $26.95
    Was: $29.95
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  • On Sale
    HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3 HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3
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    HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3

    Nefarious Arms

    Now: $535.46
    Was: $594.95
    Nefarious Arms HK 416C 9" Barrel The Nefarious Arms HK416/MR556 Barrel is built for shooters who demand precision, durability, and consistent performance. Made in the USA from 4150 chromoly steel, cold-hammer-forged, and chrome-lined for enduring...
    Now: $535.46
    Was: $594.95
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    Now: $535.46
    Was: $594.95
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  • On Sale
    New - RCM HK MP5K 10mm Barrel - Threaded 9/16x24 - HKP-21157 HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug
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    HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug

    RCM

    Now: $251.95
    Was: $279.95
    RCM HK MP5K 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5K with the RCM HK MP5K 10mm Barrel. This barrel is precision engineered for superior accuracy and durability, making it an essential upgrade for firearm enthusiasts...
    Now: $251.95
    Was: $279.95
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    Now: $251.95
    Was: $279.95
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  • Out Of Stock
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    New - HKP HK G36K Barrel - HKP-18194 HK G36K Barrel - 5.56 / .223 - 12.5"

    HK G36K Barrel - 5.56 / .223 - 12.5"

    HKP HK Parts

    Now: $399.96
    Was: $499.95
    HKP HK G36K Barrel Brand new HK G36K barrel made from 416 stainless steel and nitrided, uninstalled & unfired. The G36K barrel uses a factory German or USA spec G36K/G36C gas block. Counts as one USA made complaint part. Perfect for the SL8/G36 style...
    Now: $399.96
    Was: $499.95
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    Now: $399.96
    Was: $499.95
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  • Out Of Stock
    On Sale
    New - MM HK UMP (9mm) Barrel - 16.5 Inch - HKP-02282

    HK UMP Barrel - 9mm - 16.5 Inch

    Michaels Machines

    Now: $494.96
    Was: $549.95
    MM HK UMP (9mm) Barrel - 16.5 Inch   Fluted just like the factory HK barrels with 16 flutes.
    Now: $494.96
    Was: $549.95
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    Now: $494.96
    Was: $549.95
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