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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    Now: $26.95
    Was: $29.95
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  • On Sale
    New - RCM HK23E Barrel - CHF - HKP-21837 HK23E, HK13 Barrel - 5.56 / .223 - 17.7"
    Add to Cart

    HK23E, HK13 Barrel - 5.56 / .223 - 17.7"

    RCM

    Now: $629.96
    Was: $699.95
    RCM HK23E Barrel RCM HK23E light profile barrels are made from mil-spec 41V50 CHF blanks that are fully salt bath nitrided for optimal wear and corrosion resistance. These barrels are the finest out there to complete your HK23E or HK13 build. These are...
    Now: $629.96
    Was: $699.95
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    Now: $629.96
    Was: $699.95
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  • Out Of Stock
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    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 - 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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    Now: $224.95
    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 - Threaded 1/2x32 with 3 Lug - Gunsmith Special
    Add to Cart

    HK MP5K Barrel - .357 Sig - Threaded 1/2x32 with 3 Lug - 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 2.3mm Gas Vent Screw - HKP-22054
    Add to Cart

    HK416 A5, MR556 A4 Gas Vent Screw - 2.3mm

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K MR556 A4/416 A5 2.3mm Gas Vent Screw German 2.3mm 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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    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 - MM HK UMP 9mm Conversion Kit - 16 inch Barrel - HKP-02284 HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine

    HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine

    Michaels Machines

    Now: $800.96
    Was: $889.95
    HK UMP 9mm Conversion Kit - US-Made UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in, with the total swap...
    Now: $800.96
    Was: $889.95
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    Now: $800.96
    Was: $889.95
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    On Sale
    New - MM HK 23E (5.56/.223) Heavy Rifle Barrel - HKP-02513 HK23E, HK13 Barrel - 5.56 / .223 - 17.75" - Heavy

    HK23E, HK13 Barrel - 5.56 / .223 - 17.75" - Heavy

    Michaels Machines

    Now: $1,294.15
    Was: $1,437.95
    Michael's Machines 5.56 NATO / .223 Remington Barrel for HK 23E Heavy Rifle Brand new US-made custom rifle barrel. A must-have spare for your HK rifle or MG. Factory Barrels are hard to find and expensive, but these barrels are of great value and price...
    Now: $1,294.15
    Was: $1,437.95
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    Now: $1,294.15
    Was: $1,437.95
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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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