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 HK 45 German Barrel - Black - HKP-14564 HK45 German Barrel

    HK45 German Barrel

    H&K Heckler & Koch

    Now: $283.45
    Was: $314.95
    H&K HK 45 German Barrel New HK45 German manufacture Cold Hammer Forged Factory Barrel. This is the perfect replacement barrel for those who have an HK45 Tactical model and want to replace the barrel with a non-threaded barrel. Compatible...
    Now: $283.45
    Was: $314.95
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    Now: $283.45
    Was: $314.95
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  • On Sale
    Used - HK MP5/K Barrel Extension Faux Suppressor - Threaded 15x1 RH - HKP-20890 HK MP5,MP5K Barrel Extension / Faux Suppressor - Threaded 15x1 RH
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    HK MP5,MP5K Barrel Extension / Faux Suppressor - Threaded 15x1 RH

    USA

    Now: $161.95
    Was: $179.95
    HK MP5/K Barrel Extension Faux Suppressor - 15x1 RH Perfect for that rifle build or for those looking for the MP5KN suppressed look. Dakota tactical review of this exciting new product on an MP5: DTAC Suppressor Review Specifications: Overall length: 8...
    Now: $161.95
    Was: $179.95
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    Was: $179.95
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  • On Sale
    New - H&K P30L 4.45" 9mm Barrel - Black - HKP-01827 hk p30l, hk p30, hk barrel, hk p30l 9mm, hk 227713, hk factory parts, hk replacement barrel, polygonal rifling, hk oem, hk germany, p30l barrel, hk parts, hk pistol upgrade, heckler koch barrel, hk spares
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    HK P30L Barrel - 4.45" - 9mm

    H&K Heckler & Koch

    Now: $211.45
    Was: $234.95
    Factory barrel for HK P30L 9mm pistols made by Heckler and Koch Features: Factory made in Germany 4.45" barrel caliber 9 x 19mm six-sided polygonal Cold hammer Forged CHF from strong steel with a black finish Stamped for both its manufacture location...
    Now: $211.45
    Was: $234.95
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    Was: $234.95
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  • On Sale
    New - GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut - HKP-18252 HK G36, SL8 Barrel Retaining Nut
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    HK G36, SL8 Barrel Retaining Nut

    GSG9

    Now: $47.70
    Was: $53.00
    HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 Variants
    Now: $47.70
    Was: $53.00
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    Now: $47.70
    Was: $53.00
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  • On Sale
    New - H&K HK MR556 A4 16.5" Barrel - HKP-21931 HK MR556 A4 Barrel - 16.5"
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    HK MR556 A4 Barrel - 16.5"

    H&K Heckler & Koch

    Now: $350.95
    Was: $389.95
    H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler & Koch’s exacting standards, it features a...
    Now: $350.95
    Was: $389.95
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    Was: $389.95
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    New - H&K HK MR556 A4 Gas Block - Complete - HKP-21928 HK MR556 A4 Gas Block - Complete

    HK MR556 A4 Gas Block - Complete

    H&K Heckler & Koch

    Now: $214.16
    Was: $237.95
    H&K HK MR556 A4 Gas Block - Complete Factory HK MR556 A4 adjustable gas block ideal for switching between suppressed and unsuppressed firing.   Compatible With: HK MR556 A4 Nefarious Arms A5 barrels Features: Genuine H&K factory...
    Now: $214.16
    Was: $237.95
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    Now: $214.16
    Was: $237.95
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  • On Sale
    New - RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 13.5x1 - HKP-21788 HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded - 13.5x1
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    HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded - 13.5x1

    RCM

    Now: $193.45
    Was: $214.95
    RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 13.5x1 This 9mm conversion barrel is a drop-in replacement that allows your P30L to shoot the ubiqutous 9mm cartridge. Includes a thread protector. Each barrel is made from ordnance-grade steel,...
    Now: $193.45
    Was: $214.95
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    Now: $193.45
    Was: $214.95
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  • On Sale
    New - HKP .45 ACP - Titanium Thread Protector - Threaded 16x1 LH - HKP-22036 HK UMP Thread Protector - 16x1 LH - Titanium
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    HK UMP Thread Protector - 16x1 LH - Titanium

    H&K Heckler & Koch

    Now: $11.95
    Was: $23.95
    HKP .45 ACP Titanium Thread Protector - Threaded 16x1 LH US-made thread protector for firearms chambered in .45 ACP, threaded 16x1 left hand. Compatible With: HK UMP/USC HK45/HK45T HK45C/HK45CT HK USP 45/USPT 45 HK USPC 45/USPCT 45 B&T APC45 B&T...
    Now: $11.95
    Was: $23.95
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    Was: $23.95
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  • On Sale
    New - H&K MR762 A4 1.1mm Gas Vent Screw - HKP-21946
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    HK MR762 A4 Gas Vent Screw - 1.1mm

    H&K Heckler & Koch

    Now: $29.66
    Was: $32.95
    H&K MR762 A4 1.1mm Gas Vent Screw German 1.1mm gas vent screw for MR762 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    Now: $29.66
    Was: $32.95
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  • On Sale
    New - H&K MR762 A4 1.2mm Gas Vent Screw - HKP-21945
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    HK MR762 A4 Gas Vent Screw - 1.2mm

    H&K Heckler & Koch

    Now: $29.66
    Was: $32.95
    H&K MR762 A4 1.2mm Gas Vent Screw German 1.2mm gas vent screw for MR762 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4
    Now: $29.66
    Was: $32.95
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    Was: $32.95
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  • On Sale
    New - RCM HK P30 & P30S 9mm Barrel - Non-Threaded - HKP-16687 HK P30, P30S Barrel - 9mm - 3.85" - Non-Threaded
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    HK P30, P30S Barrel - 9mm - 3.85" - Non-Threaded

    RCM

    Now: $185.63
    Was: $206.25
    RCM HK P30 & P30S 9mm Barrel - Non-Threaded   Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest replacement barrel for the HK P30 9mm pistol, ideal as...
    Now: $185.63
    Was: $206.25
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    Now: $185.63
    Was: $206.25
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  • On Sale
    New - Nefarious Arms HK MR556 A3 & 416 A5 Barrel Nut - HKP-22082 HK416 A5, MR556 A3 Barrel Nut
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    HK416 A5, MR556 A3 Barrel Nut

    Nefarious Arms

    Now: $35.96
    Was: $39.95
    Nefarious Arms HK MR556 A3/416 A5 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option.  Meticulously crafted in the US to the highest quality standards...
    Now: $35.96
    Was: $39.95
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