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
HK417, MR762, G28 Gas Block
H&K Heckler & Koch
$199.95H&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 G28HKP-17259$199.95 -
HK P2000SK Barrel - .40 S&W - 3.89" - Threaded 14.5x1 LH
RCM
$225.00RCM 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$225.00 -
HK USP Compact Barrel - .45 ACP - 3.80"
H&K Heckler & Koch
$354.95Drop in barrel for HK USP45 Compact HK USPC .45 ACP Barrel Features: Factory barrel for HK USP45 Compact 3.80" (95mm) Compatible with: HKUSP CompactHKP-02064$354.95 -
Out Of Stock
HK G36, SL8 Piston Rod Spring
H&K Heckler & Koch
$9.99Heckler 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 SL8HKP-01863$9.99 -
Out Of Stock
HK G36C, G36K Gas Piston - US Made
USA
$49.95HK 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 -
HK33K Barrel - 300 BLK - 12.5" - Threaded 5/8x24
RCM
$234.95RCM 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$234.95 -
HK416, MR556 Barrel - 5.56 - 10.4" - Threaded 1/2"x28 - A5 Profile
Nefarious Arms
$594.95Nefarious Arms HK MR556416 10.4" A5 Barrel An expertly crafted 10.4" barrel designed for the HK MR556 and 416 platforms. Featuring the A5 profile, this barrel balances durability and weight, making it an excellent choice for both tactical and...HKP-21873$594.95 -
On Sale
CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - USED
Simunition
Now: $269.95Was: $319.95CQT 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-99054Now: $269.95Was: $319.95 -
HK MR556 Barrel 5.56 / .223 - 16.5" - Slimline
H&K Heckler & Koch
$489.95H&K MR556 Slimline Barrel, 16.5" Genuine HK MR556 Slimline 16.5" Barrel. Non-chrome-lined for match accuracy. Compatible With: HK MR556HKP-21322$489.95 -
HK P2000SK Barrel - .40 S&W - 3.25"
H&K Heckler & Koch
$259.95HK 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&WHKP-01569$259.95 -
Out Of Stock
HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine
Michaels Machines
$889.95HK UMP 9mm Conversion Kit - US-Made UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in, with the total swap...HKP-02284$889.95 -
Out Of Stock
HK23E, HK13 Barrel - 5.56 / .223 - 17.75" - Heavy
Michaels Machines
$1,437.95Michael's Machines 5.56 NATO / .223 Remington Barrel for HK 23E Heavy Rifle Brand new US-made custom rifle barrel. A must-have spare for your HK rifle or MG. Factory Barrels are hard to find and expensive, but these barrels are of great value and price...HKP-02513$1,437.95