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 MP5 Thread Protector Cap - 10mm / .40 S&W - 14x.75 - USED
H&K Heckler & Koch
Now: $34.95Was: $49.95H&K Heckler & Koch's MP5 40/10 Thread Protector Cap - Threaded 14x.75 - USED ONLY 4 UNITS AVAILABLE - AS PICTURED Priced for ONE cap - Condition Varies by Unit - Each unit Sold INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL...HKP-00422-BNow: $34.95Was: $49.95 -
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...HKP-21906$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...HKP-21157$279.95 -
Out Of Stock
HK G36K Barrel - 5.56 / .223 - 12.5"
HKP HK Parts
$499.95HKP HK G36K Barrel Brand new HK G36K barrel made from 416 stainless steel and nitrided, uninstalled & unfired. The G36K barrel uses a factory German or USA spec G36K/G36C gas block. Counts as one USA made complaint part. Perfect for the SL8/G36 style...HKP-18194$499.95 -
HK P30 Barrel - .40 S&W - 3.85"
H&K Heckler & Koch
$274.95HK P30, P30S .40 Barrel New HK German P30 standard factory length.HKP-02412$274.95 -
$439.95 -
HK USPC Barrel - 9mm - 3.58" - Non-Threaded
RCM
$199.95RCM HK USPC 9mm Barrel - Non-Threaded Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. Each USP Compact 9mm barrel is a drop-in fit for your HK USPC pistol. Specifications: Made in...HKP-16704$199.95 -
Out Of Stock
HK UMP Barrel - 9mm - 16.5 Inch
Michaels Machines
$549.95MM HK UMP (9mm) Barrel - 16.5 Inch Fluted just like the factory HK barrels with 16 flutes.HKP-02282$549.95 -
PTR PDW Barrel - 7.62 / .308 - 9" - SBR
PTR
$189.99PTR PDW .308 Pistol or SBR Barrel- USA This part comes new in the white, never installed, and ready for the HK project. Features: Just under 9" inches long 1:10 twist U.S. made barrel counts as one 922r compliant part Please Note: Front sight towers...HKP-02788$189.99 -
On Sale
HK416 A4, MR556 A5 Barrel Nut - BLEMISHED
H&K Heckler & Koch
Now: $42.95Was: $60.95HK416 A4, MR556 A5 Barrel Nut - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This precision-machined steel barrel nut is designed specifically for...HKP-21938-BNow: $42.95Was: $60.95 -
HK MR762 A4 Barrel - 16.5" - Proofed
H&K Heckler & Koch
$459.95HK MR762 A4 Barrel - 16.5" - Proofed Factory proofed HK MR762 A4 16.5" barrel with standard 5/8x24 RH thread pitch. Compatible With: HK MR762 A4HKP-22453$459.95 -
HK91, G3 Caliber Conversion Kit - .22LR
H&K Heckler & Koch
$1,895.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - LIKE NEW SOLD AS IS. NO RETURNS. Convert any HK91 or HK G3 rifle to cycle .22LR ammunition with this genuine HK caliber conversion kit. This kit is intended for marksmanship training and...HKP-22093$1,895.95