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
HK UMP Barrel - .45 ACP - 7.87" - Threaded .578x28
HDPS
$349.95HK UMP .45 ACP Barrel - Threaded .578x28 HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 ACP barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a...HKP-20872$349.95 -
HK USP Barrel - 9mm - 4.86" - Threaded 13.5x1 LH - Standard
H&K Heckler & Koch
$320.95H&K USP 9mm Standard Threaded Barrel - Threaded 13.5x1 LH This Heckler & Koch factory threaded barrel is a drop-in replacement for USP 9mm SD models. It can also be used on standard USP 9mm full-size models, but the O-ring should be removed for...HKP-17809$320.95 -
Out Of Stock
HK MP5, HK416 Barrel - .22LR - 8.5" - Threaded 8x.75
RCM
$229.95RCM HK MP5 / 416 .22LR Pistol Barrel The first and only replacement barrel for the HK .22LR platforms—this is a game-changer! Previously, replacing the barrel meant the hassle of sending the receiver to H&K and waiting for the assembly to be...HKP-21403$229.95 -
HK416, MR556 Adjustable Gas Block - 11-20" A1 Barrels - NA5
Nefarious Arms
$374.95Nefarious Arms - NA5 HK 416 Adjustable Gas Block Nefarious Arm user configurable 2-position adjustable gas block compatible with 11″ – 20″ A1 MR556 and HK416 barrels. Each gas block ships with 6 vent screws, a screwdriver,...HKP-21040$374.95 -
Out Of Stock
HK USPC Tactical Barrel - 9mm - 4.28" - Threaded 1/2x28 RH
RCM
$225.00RCM HK USPC 9mm Tactical Barrel - Threaded 1/2x28 RH Each USPC 9mm tactical barrel is crafted from ordnance grade steel, heat-treated, and finished with a durable nitride coating. It is the finest threaded replacement barrel for the HK USPC 9mm...HKP-01705$225.00 -
Out Of Stock
HK USPC Tactical Barrel - 9mm - 4.28" - Threaded 13.5x1 LH
RCM
$225.00RCM HK USPC 9mm Tactical Barrel - Threaded 13.5x1 LH Each USPC tactical barrel is crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK USP Compact 9mm...HKP-01706$225.00 -
HK VP9L Barrel - 9mm - 5.6" - Threaded 13.5x1 LH
RCM
$262.50RCM HK VP9L 9mm Tactical Barrel - Threaded 13.5x1 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 VP9L 9mm...HKP-19202$262.50 -
Barrel Bore Cleaning Brush - .45 ACP
USA
$1.95HK .45 ACP Barrel Bore Cleaning Brush This brush is a must-have item to clean the barrel effectively, and it is compatible with all standard 8-32 threaded cleaning rods (universal/most common thread). We offer a large variety of long-lasting...HKP-02757$1.95 -
HK MP5 Barrel Extension - 9mm
HKP HK Parts
$49.95HKP MP5 9mm Barrel Extension The MP5 3-lug barrel extension functions as a fake suppressor to give the standard 8.85" barrel an overall length of 16" for rifle builds. The extension slips over the tri-lug adapter and is pinned into place by a...HKP-18000$49.95 -
Out Of Stock
HK P2000 Tactical Barrel - 9mm - 4.28" - Threaded 1/2x28 RH
RCM
$225.00RCM HK P2000 9mm Tactical Barrel - Threaded 1/2x28 RH Each P2000 tactical barrel is crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. It is the finest threaded replacement barrel for the HK P2000 9mm...HKP-16700$225.00 -
HK G36C Gas Piston Rod and Spring - Complete Assembly
GSG9
$82.95HK German G36C Gas Piston Rod & Spring Assembly Complete A must have item for HK G36C conversions from SL8's or for spares for your G36C MG. A high wear and replacement part and a must have for spare parts.HKP-18250$82.95 -
Out Of Stock
HK P2000SK Conversion Barrel - .40 S&W To .357 SIG - Non-Threaded
RCM
$239.95HK P2000SK .40 S&W To .357 SIG Conversion Barrel - Non-Threaded This is a great spare or replacement barrel to have on hand. Also, a popular barrel to convert the P2000SK .40 S&W to .357 SIG. Specifications: P2000SK Conversion Barrel .40 S&W...HKP-20581$239.95