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 P2000 Conversion Barrel - .40 S&W to .357 SIG
RCM
$239.95RCM HK P2000 .40 to .357 Conversion Barrel This is a great spare or replacement barrel to have on hand. Also, a popular barrel to convert the P2000 .40 to .357. Compatible With: HK P2000 .40 S&WHKP-20580$239.95 -
HK VP9SK Tactical Barrel - 9mm - Threaded 13.5x1 LH
RCM
$225.00RCM HK VP9SK 9mm Tactical Barrel - Threaded 13.5x1 LH Each VPSK Tactical barrel is machined from ordnance grade steel, heat treated then nitrided inside and out. This is the finest threaded replacement barrel for the HK VP9SK 9mm pistol, ideal as...HKP-19262$225.00 -
Thread Protector - 9mm - 13.5x1 LH - Titanium
HKP HK Parts
$29.95HKP 9mm Titanium Thread Protector - Threaded 13.5x1 LH This billet-machined titanium thread protector with a DLC finish fits all 13.5x1 LH-threaded barrels. Its unique design covers and protects your barrel's crown. The included O-ring ensures a...HKP-19724$29.95 -
Out Of Stock
HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 9/16x24
RCM
$225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the best replacement barrel for the HK USP full-size .40 S&W...HKP-17744$225.00 -
HK P30 Tactical Barrel - .40 S&W - 4.45" - Threaded 9/16x24 RH
RCM
$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...HKP-16714$225.00 -
Out Of Stock
HK USPC Tactical Barrel - .40 S&W - 4.28" - Threaded 9/16x24 RH
RCM
$225.00RCM HK USPC .40 S&W Tactical Barrel - Threaded 9/16x24 RH 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...HKP-16707$225.00 -
Out Of Stock
HK USPC Tactical Barrel - .40 S&W - 4.28" - Threaded 14.5x1 LH
RCM
$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...HKP-16708$225.00 -
HK Mark 23 Tactical Barrel - .45 ACP - 6.02" - Threaded .578x28 RH
RCM
$289.95RCM HK Mark 23 .45 ACP Tactical Barrel - Threaded .578x28 RH This HK Mark 23 tactical threaded barrel designed for compatibility with various flash hiders and sound suppressors. Unlike the factory HK Mark 23 barrel with 16x1 RH threads, this barrel...HKP-17444$289.95 -
HK416 Gas Block Assembly Tool
Nefarious Arms
$94.95Nefarious Arms HK 416 Gas Block Assembly Tool A Nefarious Arms creation for those that like to service or replace their 416 gas block. This assembly tool will effortlessly help you assemble or disassemble your 416 gas block by simply aligning the two...HKP-21273$94.95 -
Out Of Stock
HK USP Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded
RCM
$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...HKP-17746$237.50 -
Out Of Stock
HK MR556 A4 Gas Block - Complete
H&K Heckler & Koch
$237.95H&K HK MR556 A4 Gas Block - Complete Factory HK MR556 A4 adjustable gas block ideal for switching between suppressed and unsuppressed firing. Compatible With: HK MR556 A4 Nefarious Arms A5 barrels NOT compatible with MR556 A1 without...HKP-21928$237.95 -
HK G36E Bayonet Lug - Factory
H&K Heckler & Koch
$89.95HK German Factory G36E Bayonet Lug Rare and hard to find. The inside diameter (ID) is 16mm in size. A great alternative for those that do SL8 conversions as well as M27 look clone barrel conversions. You will need the G36 bayonet lug roll pin as it...HKP-00354$89.95