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 - RCM HK USP .40 to 9mm Conversion Barrel - Threaded - 1/2x28 - HKP-21787 HK USP Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28

    HK USP Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28

    RCM

    $214.95
    RCM HK USP .40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your USP to shoot the popular 9mm cartridge. It has the standard 1/2x28 thread and comes with a thread protector...
    HKP-21787
    $214.95
    Out Of Stock
    Qty in Cart: 0
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    $214.95
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    Out Of Stock
  • On Sale
    New - RCM HK P30L .40 S&W To .357 SIG Conversion Barrel - Non-Threaded - HKP-17568 HK P30L Conversion Barrel - .40 S&W To .357 SIG - Non-Threaded
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    HK P30L Conversion Barrel - .40 S&W To .357 SIG - Non-Threaded

    RCM

    Now: $200.95
    Was: $237.50
    RCM HK P30L .40 S&W To .357 SIG Conversion 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 threaded barrel for the HK P30L .40...
    HKP-17568
    Now: $200.95
    Was: $237.50
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    Now: $200.95
    Was: $237.50
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  • On Sale
    New - HKP .40 S&W Tactical Texas Style Thread Protector - Threaded 14.5x1 LH - HKP-19907 Thread Protector - .40 S&W - Tactical Texas Style - 14.5x1 LH
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    Thread Protector - .40 S&W - Tactical Texas Style - 14.5x1 LH

    USA

    Now: $20.95
    Was: $24.95
    HKP .40 S&W Tactical Texas Style Thread Protector - Threaded 14.5x1 LH The Texas style thread protector features raised knurling, distinguishing it from the standard HK Style with flat knurling. Made in the USA, it is designed for use with 14.5x1 LH...
    HKP-19907
    Now: $20.95
    Was: $24.95
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    Now: $20.95
    Was: $24.95
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  • On Sale
    New - RCM HK MP5 9mm Barrel - Non-Threaded 3-Lug - HKP-02040 HK MP5 Barrel - 9mm - 8.85" - 3 Lug
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    HK MP5 Barrel - 9mm - 8.85" - 3 Lug

    RCM

    Now: $126.95
    Was: $149.95
    RCM HK MP5 9mm Barrel - Non-Threaded 3-Lug Made from Cold Hammer Forged (CHF) steel, each high-quality barrel is processed with a durable nitride finish, similar to the treatment used by Sig Sauer. Precision-milled to the latest specifications with...
    HKP-02040
    Now: $126.95
    Was: $149.95
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    Now: $126.95
    Was: $149.95
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  • On Sale
    New - HK G36/G36K Gas Block - HKP-19915 HK G36, G36K Gas Block - US
    Add to Cart

    HK G36, G36K Gas Block - US

    USA

    Now: $67.95
    Was: $79.95
    Gas Block - US Made - HK G36E, G36K
    HKP-19915
    Now: $67.95
    Was: $79.95
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    Now: $67.95
    Was: $79.95
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  • Out Of Stock
    New - H&K HK P2000 .357 Barrel - Black - HKP-01419

    HK P2000 Barrel - .357 SIG

    H&K Heckler & Koch

    $329.95
    HK P2000 .357 Barrel This is a great spare or replacement barrel to have on hand. This is a popular barrel to convert the P2000 .40 to .357.
    HKP-01419
    $329.95
    Out Of Stock
    Qty in Cart: 0
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    $329.95
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  • On Sale
    HK45 Thread Protector - .578x28 RH - Knurled HK45 Thread Protector - .578x28 RH - Knurled
    Add to Cart

    HK45 Thread Protector - .578x28 RH - Knurled

    HKP HK Parts

    Now: $11.95
    Was: $14.95
    HKP HK Parts HK45 Thread Protector - Threaded .578x28 RH - .45 ACP The new US-made .45 ACP tactical thread protector, the cap fits all HK45 full size & compact barrels threaded .578x28 RH thread. A must-have item to protect your threaded barrels,...
    HKP-17623
    Now: $11.95
    Was: $14.95
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    Qty in Cart: 0
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    Now: $11.95
    Was: $14.95
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  • Out Of Stock
    New - PTR HK G3/91 (7.62x51/.308) GI Barrel - Threaded 5/8x24 - HKP-18435 HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 5/8x24

    HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 5/8x24

    PTR

    $214.95
    PTR HK G3/91 (7.62x51/.308) GI Barrel - Threaded 5/8x24 New PTR91 US made G.I. spec 18" barrel. Perfect for any barrel threaded 5/8x24. New production perfect for new builds. This part counts as one US made compliant part. Specifications: Overall Lenght...
    HKP-18435
    $214.95
    Out Of Stock
    Qty in Cart: 0
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    $214.95
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  • Out Of Stock
    New - RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug - HKP-01764 HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug

    HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug

    RCM

    $149.95
    RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug This is the only US-made non-threaded barrel that uses the same steel and Cold Hammer Forged (CHF) process as Heckler & Koch. Precision-milled to the latest MP5KN PDW specifications with...
    HKP-01764
    $149.95
    Out Of Stock
    Qty in Cart: 0
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    $149.95
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  • On Sale
    New - HKP P30 9mm Fluted Barrel - Threaded 13.5x1 - HKP-21443 HK P30 Fluted Barrel - 9mm - 4.5" - Threaded 13.5x1
    Add to Cart

    HK P30 Fluted Barrel - 9mm - 4.5" - Threaded 13.5x1

    HKP HK Parts

    Now: $206.95
    Was: $229.95
    HKP P30 9mm Fluted Barrel - Threaded 13.5x1 Made from ordnance grade steel, heat treated, and finished with durable nitride. Each fluted barrel includes an O-ringed thread protector that will not loosen or fall off during range sessions...
    HKP-21443
    Now: $206.95
    Was: $229.95
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    Qty in Cart: 0
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    Now: $206.95
    Was: $229.95
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  • Out Of Stock
    New - RCM HK USPC .45 ACP Barrel - Threaded 16x1 LH - HKP-20129 HK USPC, USPC Tactical Barrel - .45 ACP - 4.47" - Threaded 16x1 LH

    HK USPC, USPC Tactical Barrel - .45 ACP - 4.47" - Threaded 16x1 LH

    RCM

    $250.00
    RCM HK USPC .45 ACP Barrel - Threaded 16x1 LH HK USPC .45 ACP & HK USPC Tactical .45 ACP barrel with 16x1 threaded design, compatible with various flash hiders and sound suppressors. Unlike the factory USPC Tactical .45 ACP barrel with metric 16x1...
    HKP-20129
    $250.00
    Out Of Stock
    Qty in Cart: 0
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    $250.00
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  • New - HK 416 10.4" Upper Gas Block - German - HKP-01543 HK416 Gas Block for 10.4" Barrels
    Add to Cart

    HK416 Gas Block for 10.4" Barrels

    H&K Heckler & Koch

    $279.95
    Heckler and Koch HK German 10.4" Barrel Non-Vented Gas Block Complete Factory HK NON-VENTED 10.4" gas block. Compatible With: HK416 10.4" uppers HK MR556 to 10.4" conversions
    HKP-01543
    $279.95
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    Qty in Cart: 0
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    $279.95
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