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
    New - H&K MR762/417/G28 Gas Block - HKP-17259 HK417, MR762, G28 Gas Block

    HK417, MR762, G28 Gas Block

    H&K Heckler & Koch

    $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
    HKP-17259
    $199.95
    Out Of Stock
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    $199.95
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  • On Sale
    New - RCM HK P2000SK .40 S&W Barrel - Threaded 14.5x1 LH - HKP-16943 HK P2000SK Barrel - .40 S&W - 3.89" - Threaded 14.5x1 LH
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    HK P2000SK Barrel - .40 S&W - 3.89" - Threaded 14.5x1 LH

    RCM

    Now: $190.95
    Was: $225.00
    RCM HK P2000SK .40 S&W Barrel - Threaded 14.5x1 LH Each P2000 SK tactical 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...
    HKP-16943
    Now: $190.95
    Was: $225.00
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    Was: $225.00
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  • Out Of Stock
    New - HK G36, SL8 Piston Rod Spring - HKP-01863

    HK G36, SL8 Piston Rod Spring

    H&K Heckler & Koch

    $9.99
    Heckler and Koch Piston Rod Spring for HK G36 and HK SL8 A must-have spare repair and replacement part. New HK German factory part. Compatible With: G36 SL8
    HKP-01863
    $9.99
    Out Of Stock
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    $9.99
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  • Out Of Stock
    New - HK G36C/G36K Gas Piston - HKP-17277 HK G36C/G36K Gas Piston - HKP-17277

    HK G36C, G36K Gas Piston - US Made

    USA

    $49.95
    HK G36C/G36K Gas Piston New Tom Bostic US Made G36C & G36K Gas Piston. Counts as one US made compliant part for your SL8 - G36C or G36K style conversion. This is one of the best parts to use on the conversion as it is one of the cheapest ways to get...
    HKP-17277
    $49.95
    Out Of Stock
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    $49.95
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  • On Sale
    New - RCM HK33K .300 BLK K Length Barrel - Threaded 5/8x24 - HKP-16952 HK33K Barrel - 300 BLK - 12.5" - Threaded 5/8x24
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    HK33K Barrel - 300 BLK - 12.5" - Threaded 5/8x24

    RCM

    Now: $198.95
    Was: $234.95
    RCM HK33K .300 BLK K Length Barrel - Threaded 5/8x24 Each barrel is designed for use with popular AAC-Style quick detach muzzle brakes and suppressors featuring a 5/8x24 thread pitch. It is also suitable for most .300 BLK suppressors and applications...
    HKP-16952
    Now: $198.95
    Was: $234.95
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    Now: $198.95
    Was: $234.95
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  • On Sale
    New - RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 - HKP-17762 HK MP5, HK94, HK34 Barrel - 9mm - 12.7"- Threaded 1/2x28
    Add to Cart

    HK MP5, HK94, HK34 Barrel - 9mm - 12.7"- Threaded 1/2x28

    RCM

    Now: $183.95
    Was: $204.95
    RCM MP5, HK34, HK94 Barrel - 9mm - 12.7"- Threaded 1/2x28   Each barrel is hand-selected from the finest cold hammer forged (CHF) 41V45 steel blanks, expertly profiled and chambered in the desirable 16 flute chamber profile. Finished with a...
    HKP-17762
    Now: $183.95
    Was: $204.95
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    Now: $183.95
    Was: $204.95
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  • On Sale
    HK416 A1, MR556 A1 Barrel Nut HK416 A1, MR556 A1 Barrel Nut
    Add to Cart

    HK416 A1, MR556 A1 Barrel Nut

    Nefarious Arms

    Now: $39.95
    Was: $49.95
    Nefarious Arms HK MR556 A1/416 A1 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...
    HKP-22279
    Now: $39.95
    Was: $49.95
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    Now: $39.95
    Was: $49.95
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  • On Sale
    Used - CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - USED - HKP-99054 CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - USED
    Add to Cart

    CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - USED

    Simunition

    Now: $269.95
    Was: $319.95
    CQT FX Simunition Conversion Kit for MP5 - 9mm - Blue - USED   SHADES OF BLUE MAY VARY   The CQT FX Simunition conversion kit is in good  condition and comes with original factory packaging. This is your chance to grab one of the last...
    HKP-99054
    Now: $269.95
    Was: $319.95
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    Now: $269.95
    Was: $319.95
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  • New - H&K HK P2000SK .40 S&W - Barrel - Black - HKP-01569 HK P2000SK Barrel - .40 S&W - 3.25"
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    HK P2000SK Barrel - .40 S&W - 3.25"

    H&K Heckler & Koch

    $259.95
    HK German Factory P2000SK .40 S&W Barrel Brand new HK P2000SK .40 Cal factory cold hammer forged polygonal rifled barrel. This barrel measures 3.25" and is drop-in ready.   Compatible With: HK P2000SK .40 S&W
    HKP-01569
    $259.95
    Add to Cart
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    $259.95
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  • Out Of Stock
    On Sale
    New - H&K HK USP Full Size .40 Barrel - Black - HKP-01528 HK USP Barrel - .40 S&W

    HK USP Barrel - .40 S&W

    H&K Heckler & Koch

    Now: $272.95
    Was: $321.95
    Heckler and Koch German USP Full Size .40 Caliber Barrel Great idea to have a spare, factory cold hammer forged, polygonal HK barrel on hand. Compatible With: USP .40 Full Size USP .40 Tactical
    HKP-01528
    Now: $272.95
    Was: $321.95
    Out Of Stock
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    Now: $272.95
    Was: $321.95
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  • On Sale
    New - HKP HK 53/51 (5.56/.223) Urbach Style Fluted Barrel Extension - Threaded 15x1 RH - HKP-17638 HK51, HK53 Barrel Extension - Fluted - Urbach Style - Threaded 15x1 RH
    Add to Cart

    HK51, HK53 Barrel Extension - Fluted - Urbach Style - Threaded 15x1 RH

    HKP HK Parts

    Now: $82.95
    Was: $149.95
    HKP HK 53/51 (5.56/.223) Urbach Style 8 inch Fluted Barrel Extension - Threaded 15x1 RH This 8" long fluted barrel extension is designed to extend the overall length of a 51 or 53 barrel to meet the 16" legal requirement. Ideal for those using an 8"...
    HKP-17638
    Now: $82.95
    Was: $149.95
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    Now: $82.95
    Was: $149.95
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  • Out Of Stock
    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

    $163.95
    PTR HK 93/33 (5.56/.223) Barrel - Threaded 15x1 RH New US made Barrel by PTR for the HK93, HK33 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...
    HKP-16458
    $163.95
    Out Of Stock
    Qty in Cart: 0
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    $163.95
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    Out Of Stock
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