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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On Sale
HK 416, MR556 Barrel Nut
H&K Heckler & Koch
Now: $48.56Was: $53.95Heckler and Koch Barrel nut for MR556A1 rifle All steel barrel nut. This item is a must-have repair and replacement part for removal or when you have any work done to your barrel, as the barrel nut may become damaged in the removal and...Now: $48.56Was: $53.95 -
On Sale
HK UMP Barrel - .45 ACP - 7.87" - Threaded 16x1 LH
HDPS
Now: $314.95Was: $349.95HK UMP & USC 45 ACP 8" Threaded Barrel HDPS UMP barrels are perfect for the USC to UMP conversions and a replacement UMP .45 barrel. They are considered by many to be the finest US-made barrel available. This barrel is the same length as a factory HK...Now: $314.95Was: $349.95 -
On Sale
HK45 Thread Protector - 16x1 LH - Titanium
Now: $22.45Was: $24.95HK .45 ACP Titanium Thread Protector - Threaded 16x1 LH Crafted from solid titanium, this tactical thread protector fits all HK45 full-size and compact barrels threaded 16x1 LH. Essential for safeguarding your threaded barrels and exposed threads, it...Now: $22.45Was: $24.95 -
On Sale
HK MP5K, MP5KN Barrel - 9mm - 5.85" - Threaded 1/2x28 with 3 Lug
RCM
Now: $148.45Was: $164.95RCM HK MP5K/N 9mm Barrel - Threaded 1/2x28 - 3-Lug Machined from a cold hammer forged blank to the latest MP5KN PDW specifications, this barrel features factory-correct, updated 16 flutes in the chamber. It is 3-lugged, threaded, and designed to...Now: $148.45Was: $164.95 -
Out Of StockOn Sale
HK USP Tactical Barrel - .40 S&W - 4.9"- Threaded 14.5x1 LH
H&K Heckler & Koch
Now: $269.95Was: $299.95H&K USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH This genuine Heckler & Koch part is a drop-in replacement for the full-size USP, USP Tactical, and other .40 S&W pistols. The tactical threaded barrel offers precise fit and...Now: $269.95Was: $299.95 -
Out Of StockOn Sale
HK91, G3 Barrel - 7.62 / .308 - 17.7" - Threaded 15x1 RH
RCM
Now: $238.45Was: $264.95RCM HK G3/91 (7.62x51/.308) Barrel - Threaded 15x1 RH Made by RCM to the highest tolerances and finest material available. Perfect for that HK build or to replace that shot-out barrel. Each barrel counts as 1 US-compliant part as a bonus. These are...Now: $238.45Was: $264.95 -
On Sale
HK .40 S&W Thread Protector - Tactical - Threaded 14.5x1 LH
H&K Heckler & Koch
Now: $11.95Was: $24.95H&K .40 S&W Tactical Thread Protector - Threaded 14.5x1 LH Fits all HK barrels that are threaded 14.5x1 LH. This is the correct thread protector for all the HK .40 S&W metric threaded barrels. This will also fit non HK related barrels as well...Now: $11.95Was: $24.95 -
Out Of StockOn Sale
HK UMP Barrel - .45 ACP - 8" - Threaded 16x1 LH with 3 Lug
HDPS
Now: $359.95Was: $399.95HK UMP .45 ACP Barrel - Threaded 16x1 LH - 3-Lug New USA made .45 ACP 8" barrel for the UMP or Omega firearms. Each barrel is threaded 16x1 LH and 3-lug tipped. The finest barrel for the UMP .45 ACP on the market. Specifications: Threaded 16x1...Now: $359.95Was: $399.95 -
Out Of StockOn Sale
HK45 Tactical Barrel - .45 ACP - 5.15" - Threaded .578x28 RH
RCM
Now: $225.00Was: $250.00RCM HK45 .45 ACP Tactical Barrel - Threaded .578x28 RH HK45 & HK45 Tactical threaded barrel compatible with a variety of flash hiders and sound suppressors. Unlike the factory HK45 Tactical barrel, which has a metric 16x1 LH thread, this barrel...Now: $225.00Was: $250.00 -
On Sale
HK Pistol O-Ring - Barrel - .40 S&W
H&K Heckler & Koch
Now: $4.46Was: $4.95New HK German Black .40 Cal Barrel O-ring For All .40 Caliber Threaded Barrels This factory part is a high wear and replacement item as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup and increased accuracy...Now: $4.46Was: $4.95 -
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...$349.95 -
Out Of StockOn Sale
HK MP5, HK416 Barrel - .22LR - 8.5" - Threaded 8x.75
RCM
Now: $206.95Was: $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...Now: $206.95Was: $229.95