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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HK33, HK93 Barrel - .300 BLK - 16.1 Inch - Threaded 5/8x24
RCM
$234.95NCM HK33/93 .300 BLK 16.125 Inch Barrel - Threaded 5/8x24 Each barrel was designed for use with the wildly popular AAC style quick detach muzzle breaks and cans in the 5/8x24 thread pitch. Although, this barrel is perfect for just about any .300 BLK...$234.95 -
HK416 A5, MR556 A4 Gas Vent Screw - 1.0mm
H&K Heckler & Koch
$29.95H&K MR556 A4/416 A5 1.0mm Gas Vent Screw German 1.0mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5$29.95 -
HK MR762 A4 Gas Vent Screw - 1.7mm
H&K Heckler & Koch
$29.95H&K MR762 A4 1.7mm Gas Vent Screw German 1.7mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4$29.95 -
HK VP40 Thread Protector - 9/16x24 - Titanium
HKP HK Parts
$24.95HKP .40 S&W Enhanced Titanium Thread Protector- Threaded 9/16x24 This solid titanium .40 S&W tactical thread protector is designed for barrels threaded 9/16x24. It’s an essential accessory for safeguarding your threaded barrel,...$24.95 -
Out Of Stock
HK416, MR556 Upper 8" 416C Style Conversion Kit
HKP HK Parts
$1,285.95Upper Conversion Kit for HK416 and MR556 8 inch barrel - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 8" barrel conversion kit for 416 or MR556. Each conversion kit...$1,285.95 -
HK416 A5, MR556 A4 Gas Vent Screw - 1.3mm
H&K Heckler & Koch
$29.95H&K MR556 A4/416 A5 1.3mm Gas Vent Screw The 1.3mm gas vent screw is the standard size installed at the factory on the MR556 A4. Compatible With: HK MR556 A4$29.95 -
HK416 A5, MR556 A4 Gas Vent Screw - 1.2mm
H&K Heckler & Koch
$29.95H&K MR556 A4/416 A5 1.2mm Gas Vent Screw German 1.2mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5$29.95 -
HK416 A5, MR556 A4 Gas Vent Screw - 1.1mm
H&K Heckler & Koch
$29.95H&K MR556 A4/416 A5 1.1mm Gas Vent Screw German 1.1mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5$29.95 -
HK MR762 A4 Gas Vent Screw - 1.5mm
H&K Heckler & Koch
$29.95H&K MR762 A4 1.5mm Gas Vent Screw German 1.5mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4$29.95 -
HK MR762 A4 Gas Vent Screw - 2.1mm
H&K Heckler & Koch
$29.95H&K MR762 A4 2.1mm Gas Vent Screw German 2.1mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4$29.95 -
HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3
Nefarious Arms
$594.95Nefarious Arms HK 416C 9" Barrel The Nefarious Arms HK416/MR556 Barrel is built for shooters who demand precision, durability, and consistent performance. Made in the USA from 4150 chromoly steel, cold-hammer-forged, and chrome-lined for enduring...$594.95 -
HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug
RCM
$279.95RCM HK MP5K 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5K with the RCM HK MP5K 10mm Barrel. This barrel is precision engineered for superior accuracy and durability, making it an essential upgrade for firearm enthusiasts...$279.95