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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HK MP5, MP5K Micro Comp - 9mm - Knurled - Threaded 1/2x28 - Right Hand
HKP HK Parts
$26.95HKP HK MP5/K 9mm Knurled Micro Comp - Threaded 1/2x28 RH Our new MP5 Micro Comp combines the classic appearance of a factory-style thread protector with enhanced functionality. Extended and slotted,...HKP-21176$26.95 -
HK91, G3 Barrel Chamber Flute Cleaning Brush
H&K Heckler & Koch
$25.95Heckler and Koch New Chamber Flute Brush for HK91 and HK G3 7.62x51 / .308 This brush is a must-have for cleaning the chamber flutes on a HKG3 or HK91-style firHKP-00500$25.95 -
HK UMP Barrel - .45 ACP - 7.87" - Threaded 16x1 LH
HDPS
$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...HKP-02634$349.95 -
HK Pistol O-Ring - Barrel - .40 S&W
H&K Heckler & Koch
$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,...HKP-02126$4.95 -
Out Of Stock
HK VP9L Barrel - 9mm - 5.6" - Threaded 1/2x28 RH
RCM
$262.50RCM HK VP9L 9mm Tactical Barrel - Threaded 1/2x28 RH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest...HKP-19203$262.50 -
On Sale
HK416, MR556 Adjustable Gas Block - 11-20" A1 Barrels - NA5
Nefarious Arms
Now: $336.95Was: $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...HKP-21040Now: $336.95Was: $374.95 -
Out Of Stock
HK Barrel Retaining Pin - 5.15mm
H&K Heckler & Koch
$14.95H&K Barrel Retaining Pin - 5.15mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in...HKP-01662$14.95 -
HK MP5K, SP89, SP5K Barrel - 5.85" - Threaded 1/2x28 with 3 Lug
B&T Brugger & Thomet
$350.00B&T HK MP5K/SP5K/SP89 Barrel - Threaded 1/2x28 - 3-Lug New from B&T Switzerland, cold hammer-forged (CHF), properly fluted & nitrided MP5K/SP5K barrels manufactured exclusively for the HK SP5K. New...HKP-17894$350.00 -
HK45 Thread Protector - 16x1 LH - Titanium
$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...HKP-17942$24.95 -
HK416, MR556 Gas Block - Slimline - Vented
H&K Heckler & Koch
$145.95Heckler and Koch Low Profile Complete Gas Block for HK MR556, HK416, HK GermanHKP-02660$145.95 -
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...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...HKP-17809$320.95