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
    On Sale
    New - H&K MR556 A4/416 A5 1.6mm Gas Vent Screw - HKP-22047

    HK416 A5, MR556 A4 Gas Vent Screw - 1.6mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.6mm Gas Vent Screw German 1.6mm gas vent screw for MR556 A4. Provides more 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 MR762/417/G28 Gas Block - HKP-17259 HK417, MR762, G28 Gas Block

    HK417, MR762, G28 Gas Block

    H&K Heckler & Koch

    Now: $179.95
    Was: $199.95
    H&K MR762/417/G28 Gas Block New German HK manufacture for the HK MR762 & HK417, G28 firearm. This unit comes without the sling loops installed. Compatible With: HK MR762 HK 417 HK G28
    Now: $179.95
    Was: $199.95
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    Now: $179.95
    Was: $199.95
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  • On Sale
    New - H&K HK USP .45 ACP Expert Barrel - Black - HKP-01525 HK USP Expert Barrel - .45 ACP
    Add to Cart

    HK USP Expert Barrel - .45 ACP

    H&K Heckler & Koch

    Now: $359.95
    Was: $399.95
    HK USP .45 ACP Expert Barrel This barrel will fit all HK USP .45, full-size models. If you want a longer barrel for your HK USP 45 or USP 45 Tactical, this is a great option for an extended length or use with an HK Comp Weight.
    Now: $359.95
    Was: $399.95
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    Now: $359.95
    Was: $399.95
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  • On Sale
    New - RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 - HKP-17761 HK MP5, HK94, HK34 Barrel - 9mm - 16.175" - Threaded 1/2x28
    Add to Cart

    HK MP5, HK94, HK34 Barrel - 9mm - 16.175" - Threaded 1/2x28

    RCM

    Now: $224.95
    Was: $249.95
    RCM MP5, HK34, HK94 Barrel - 9mm - 16.175"- Threaded 1/2x28 Each barrel is meticulously crafted from premium cold hammer forged (CHF) 41V45 steel, expertly profiled and chambered with a 16-flute chamber profile. Finished with a highly durable nitrided...
    Now: $224.95
    Was: $249.95
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    Was: $249.95
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  • On Sale
    New - HK MP5K .357 Sig Barrel - 3 Lug - Threaded 1/2x32 - Gunsmith Special - HKP-99177 HK MP5K Barrel - .357 Sig - 3 Lug - Threaded 1/2x32 - Gunsmith Special
    Add to Cart

    HK MP5K Barrel - .357 Sig - 3 Lug - Threaded 1/2x32 - Gunsmith Special

    USA

    Now: $44.96
    Was: $289.95
    HK MP5K .357 Sig Barrel - 3 Lug - Threaded 1/2x32 - Gunsmith Special  Unfinished US-Made MP5K .357 Sig barrel. Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. Condition will...
    Now: $44.96
    Was: $289.95
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    Now: $44.96
    Was: $289.95
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  • On Sale
    New - H&K MR556 A4/416 A5 2.5mm Gas Vent Screw - HKP-22056
    Add to Cart

    HK416 A5, MR556 A4 Gas Vent Screw - 2.5mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 2.5mm Gas Vent Screw German 2.5mm gas vent screw for MR556 A4. Provides more 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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  • Out Of Stock
    On Sale
    New - H&K MR556 A4/416 A5 1.5mm Gas Vent Screw - HKP-22046

    HK416 A5, MR556 A4 Gas Vent Screw - 1.5mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 1.5mm Gas Vent Screw German 1.5mm gas vent screw for MR556 A4. Provides more 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 - RCM HK Mark 23 .45 ACP Tactical Barrel - Threaded 16x1 RH - HKP-20606 HK Mark 23 Tactical Barrel - .45 ACP - 5.87" - Threaded 16x1 RH
    Add to Cart

    HK Mark 23 Tactical Barrel - .45 ACP - 5.87" - Threaded 16x1 RH

    RCM

    Now: $242.95
    Was: $269.95
    RCM HK Mark 23 .45 ACP Tactical Barrel - Threaded 16x1 RH US made HK Mark 23 tactical threaded barrel for use with a wide variety of flash hiders & sound suppressors.  Specifications: Made In The USA Double Stress Relieved Nitrided Finish To...
    Now: $242.95
    Was: $269.95
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    Now: $242.95
    Was: $269.95
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  • On Sale
    New - RCM HK P30 .40 S&W Tactical Barrel - Threaded 14.5x1 LH - HKP-16221 HK P30 Tactical Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH
    Add to Cart

    HK P30 Tactical Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH

    RCM

    Now: $202.50
    Was: $225.00
    RCM HK P30 .40 S&W Tactical Barrel - Threaded 14.5x1 LH   Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK P30...
    Now: $202.50
    Was: $225.00
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    Now: $202.50
    Was: $225.00
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  • Out Of Stock
    On Sale
    New - PTR HK 93/33 (5.56/.223) Barrel - Threaded 15x1 RH - HKP-16458 HK33, HK93 Barrel - 5.56 / .223 - 16.1" - Threaded 15x1 RH

    HK33, HK93 Barrel - 5.56 / .223 - 16.1" - Threaded 15x1 RH

    PTR

    Now: $147.56
    Was: $163.95
    PTR HK 93/33 (5.56/.223) Barrel - Threaded 15x1 RH New US made Barrel by PTR for the HK93,33 style of firearms. Specifications: Made In The USA 922r Compliant Counts as 1 US Made Part Overall length 16.1" 4140 Ordnance Grade Steel Threaded 15x1 RH 1:9...
    Now: $147.56
    Was: $163.95
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    Now: $147.56
    Was: $163.95
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  • On Sale
    New - RCM HK MP5N 9mm Barrel - Threaded 1/2x32 - 3-Lug - HKP-16967 HK MP5N Barrel - 9mm - 8.85" - Threaded 1/2x32 with 3 Lug
    Add to Cart

    HK MP5N Barrel - 9mm - 8.85" - Threaded 1/2x32 with 3 Lug

    RCM

    Now: $161.95
    Was: $179.95
    RCM HK MP5N 9mm Barrel - Threaded 1/2x32 - 3-Lug This MP5N barrel delivers exceptional value, crafted from premium Cold Hammer Forged Steel and treated with a durable nitride process. It easily accommodates suppressors and other muzzle attachments. Brand...
    Now: $161.95
    Was: $179.95
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    Now: $161.95
    Was: $179.95
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  • On Sale
    New - H&K MR556 A4/416 A5 2.2mm Gas Vent Screw - HKP-22053
    Add to Cart

    HK416 A5, MR556 A4 Gas Vent Screw - 2.2mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 2.2mm Gas Vent Screw German 2.2mm gas vent screw for MR556 A4. Provides more 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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    Now: $26.95
    Was: $29.95
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