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 StockOn Sale
HK USPC Tactical Barrel - .40 S&W - 4.28" - Threaded 14.5x1 LH
RCM
Now: $202.50Was: $225.00RCM HK USPC .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each USPC .40 S&W tactical barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement...Now: $202.50Was: $225.00 -
On Sale
HK USP, USP Tactical Barrel - 9mm - 4.86" - Threaded 13.5x1 LH
RCM
Now: $162.00Was: $225.00RCM HK USP 9mm Tactical Barrel - Threaded 13.5x1 LH Each barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra-desirable nitride finish. This is the finest replacement barrel available...Now: $162.00Was: $225.00 -
Out Of StockOn Sale
HK USP Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded
RCM
Now: $213.75Was: $237.50RCM HK USP .40 S&W To .357 SIG Conversion Barrel - Non-Threaded Each barrel is finely and painstakingly made from ordnance grade steel, heat treated, with a nitrided finish inside and out. This is the finest replacement barrel available for the HK...Now: $213.75Was: $237.50 -
On Sale
HK45 Compact Barrel - .45 ACP - 3.94" - Non-threaded
H&K Heckler & Koch
Now: $211.45Was: $234.95HK45C German Barrel Genuine Heckler & Koch HK45 Compact standard length, non-threaded, factory barrel. This is a great item to have as a spare.Now: $211.45Was: $234.95 -
Out Of StockOn Sale
HK G3K Barrel - 7.62 / .308 - 12.69" - Threaded 15x1 RH
RCM
Now: $220.45Was: $244.95RCM HK G3K (7.62x51/.308) Barrel - Threaded 15x1 RH Manufactured to exact G3K specifications from cold hammer forged (CHF) steel, this barrel is a direct replacement for worn G3K barrels or ideal for your HKG3K build. It also counts as one US compliance...Now: $220.45Was: $244.95 -
HK G36, CQB Barrel Assembly - 5.56 / .223 - 15.4"
H&K Heckler & Koch
$1,095.95Factory German HK G36 CQB Barrel Assembly - New Brand new HK German cold hammer forged barrel assembly, date coded, uninstalled & unfired in the factory wax paper wrapping. Each barrel assembly uses the standard G36/SL8 piston rod assembly so the...$1,095.95 -
On Sale
HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 14.5x1 LH
RCM
Now: $202.50Was: $225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH 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 USP full-size .40...Now: $202.50Was: $225.00 -
Out Of StockOn Sale
HK VP40 Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH
RCM
Now: $202.50Was: $225.00RCM HK VP40 .40 S&W Tactical Barrel - Threaded 14.5x1 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 VP40 .40 cal...Now: $202.50Was: $225.00 -
On Sale
HK416, MR556, G36, SL8 Gas Piston
USA
Now: $71.95Was: $79.95HK G36, HK SL8, HK 416, & HK MR556 Gas Piston Complete assembly with 3X rings installed and nitrided black. Counts as one US-made compliant part for your SL8-G36 style conversion. This is one of the best parts to use on the conversion as it is one of...Now: $71.95Was: $79.95 -
On Sale
HK MP5K Barrel Extension / Faux Suppressor - 9mm - 3 Lug - US
HKP HK Parts
Now: $47.96Was: $59.95HKP MP5K 9mm Fake Suppressor/Barrel Extension - 3-Lug MP5K 3-Lug Barrel Barrel Extension, Fake Suppressor US made MP5K solid aluminum fake suppressor, barrel extension. Slips over the 3-lug MP5K PDW barrel and then pinned in place to meet the overall 16"...Now: $47.96Was: $59.95 -
On Sale
HK P30 Tactical Barrel - .40 S&W - 4.45" - Threaded 9/16x24 RH
RCM
Now: $202.50Was: $225.00RCM HK P30 .40 S&W Tactical Barrel - Threaded 9/16x24 RH 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 P30 .40...Now: $202.50Was: $225.00 -
On Sale
HK USP Barrel - .45 ACP - 5.09" - Threaded 16x1 LH
RCM
Now: $225.00Was: $250.00RCM HK USP .45 ACP Barrel - Threaded 16x1 LH HK USP .45 ACP & HK USP Tactical .45 ACP threaded barrel for use with a wide variety of flash hiders & sound suppressors. This is a special offering as a factory USP Tactical.45 ACP barrel is threaded...Now: $225.00Was: $250.00