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
HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 5/8x24
PTR
$214.95PTR HK G3/91 (7.62x51/.308) GI Barrel - Threaded 5/8x24 New PTR91 US made G.I. spec 18" barrel. Perfect for any barrel threaded 5/8x24. New production perfect for new builds. This part counts as one US made compliant part. Specifications: Overall Lenght...HKP-18435$214.95 -
HK UMP Barrel - .45 ACP - 3 Lug Adapter
OMEGA
$449.95Omega HK UMP .45 ACP Barrel - 3-Lug This is the newest barrel for the UMP to hit the market that will come with a removable 3-lug adapter. The 3-lug adapter will be the same spec as the MP5 3 lug, making your UMP more versatile when it comes down to...HKP-21070$449.95 -
$79.95 -
HK P30L Tactical Barrel - .40 S&W - 5.06" - Threaded 9/16x24 RH
RCM
$225.00RCM HK P30L .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 P30L .40...HKP-16713$225.00 -
HK45, UMP, USC, USP 45 Thread Protector - 16x1 LH - Titanium
HKP HK Parts
$19.95HKP .45 ACP Titanium Thread Protector - Threaded 16x1 LH This new style .45 ACP tactical thread protector fits all HK45 full-size and compact barrels with 16x1 LH threads. Essential for protecting your threaded barrels and exposed threads, it preserves...HKP-18004$19.95 -
HK416 Gas Block for 10.4" Barrels
H&K Heckler & Koch
$279.95HK German 10.4" Barrel Non-Vented Gas Block Complete Factory HK NON-VENTED 10.4" gas block. Compatible With: HK 416 10.4" uppers HK MR556 to 10.4" conversionsHKP-01543$279.95 -
Out Of Stock
HK91, G3 Barrel - 7.62x51 - 17.7" - Threaded 5/8x24
RCM
$264.99RCM HK G3/91 Threaded Barrel - 5/8x24-CHE Machined by RCM from a Mil-Spec 41V50 Hammer Forged Blank. These blanks are considered to be one of the finest made. 1:10 twist, Nitride finish. Perfect for that HK build or to replace that shot out barrel. Each...HKP-21838$264.99 -
HK416 Barrel Multi Tool
Nefarious Arms
$124.95Nefarious Arms HK 416 Barrel Installation and Multi Tool HK416 multitool patterned off a genuine HK 416 wrench with added features. Use with a traditional 1/2″ torque wrench or the plug-and-socket style torque wrench that utilizes the ball...HKP-21487$124.95 -
HK UMP Barrel - 9mm - Threaded 1/2x28 with 3 Lug - US
HKP HK Parts
$299.95HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug HKP UMP 3-lug 1/2x28 threaded barrel. This is the perfect replacement for a worn out barrel or as a spare. With the 3-lug attachment point you can attach any suppressor or flash hider that is in-spec or you...HKP-18639$299.95 -
HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug
RCM
$149.95RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug This is the only US-made non-threaded barrel that uses the same steel and Cold Hammer Forged (CHF) process as Heckler & Koch. Precision-milled to the latest MP5KN PDW specifications with...HKP-01764$149.95 -
HK Mark 23 Barrel - .45 ACP - Threaded 16x1 RH
H&K Heckler & Koch
$589.95H&K Mark 23 .45 ACP Barrel - Threaded 16x1 RH A great replacement item for a now out-of-production pistol. New HK German mark 23 barrel threaded with the factory correct 16x1 RH thread. Get that replacement or factory new spare barrel while they are...HKP-01038$589.95 -
HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm
H&K Heckler & Koch
$29.95 - $34.95H&K MR556 A4 and HK416 A5 Gas Vent Screws German gas vent screw for MR556 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm equals...HKP-22470-M$29.95 - $34.95