Barrels
Discover premium HK barrels and parts for your firearms. Our bestselling selection includes replacement barrels, custom barrels, precision barrels, and tactical barrels, all crafted to meet the highest standards. Whether you need stainless steel barrels, threaded barrels, pistol barrels, rifle barrels, or submachine gun barrels, we have the ideal upgrade for you. Enhance your HK rifle or pistol with high-performance, aftermarket, and competition barrels. Shop now for OEM barrels and accessories to elevate your shooting experience with unparalleled quality and reliability.
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H&K HK USPC .45 ACP Barrel - Black
H&K Heckler & Koch
$349.95HK USPC .45 ACP Barrel - Black This item is needed to make a USPC Tactical a standard-length barrel as found on the USPC .45.HKP-02064$349.95 -
Nefarious Arms HK 416/MR556 14.5" A3 Barrel
Nefarious Arms
$694.95Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 (A1,...HKP-21589$694.95 -
RCM HK P30 9mm Tactical Barrel - Threaded 13.5x1 LH
RCM
$225.00RCM HK P30 9mm Tactical Barrel - Threaded 13.5x1 LH 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 9mm pistol,...HKP-16238$225.00 -
RCM HK33/93 .300 BLK 16.1 Inch Barrel - 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...HKP-17392$234.95 -
H&K .45 ACP Tactical Texas Style Thread Protector - Threaded 16x1 RH
H&K Heckler & Koch
$24.95H&K .45 ACP Tactical Texas Style Thread Protector - Threaded 16x1 RH The Texas Style thread protector features raised knurling, distinguishing it from the standard HK style, which does not have this raised texture. This design ensures a secure grip...HKP-20406$24.95 -
Out Of Stock
H&K 21E/23E (7.62x51/.308) & (5.56/.223) Barrel Handle
H&K Heckler & Koch
$79.95HK German Factory HK21E/23E & HK11E/13E Barrel Handle - New Factory German fiberglass/polymer extended E barrel handle. This is also considered an upgrade for older style HK21 barrel handles Compatible With: HK23E HK21E HK11E HK13E MM23E, 21E,...HKP-00243$79.95 -
H&K HK USP Elite .45 ACP Barrel - Black
H&K Heckler & Koch
$499.95HK USP Elite .45 ACP Barrel - Black The finest HK USP .45 barrel available and used in the HK Elite line of firearms from hand-selected barrel blanks. Compatible With: HK USP Elite .45 ACP Also fits the USP .45 Full Size & Tactical models but...HKP-01524$499.95 -
HK MP5/K Barrel Extension Faux Suppressor - Threaded 15x1 RH
USA
$179.95HK MP5/K Barrel Extension Faux Suppressor - 15x1 RH Perfect for that rifle build or for those looking for the MP5KN suppressed look. Dakota tactical review of this exciting new product on an MP5: DTAC Suppressor Review Specifications: Overall length: 8...HKP-20890$179.95 -
Out Of Stock
HKP HK G36K Barrel
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 -
Out Of Stock
MM HK UMP (9mm) Barrel - 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-32 (7.62x39) Barrel - 12.7 inch
PTR
$179.95PTR-32 (7.62x39) Barrel - 12.7 inch PTR-91 US made 12.7" barrel. Factory production perfect for new builds. Counts as one US made compliant part. Compatible With: Short length G3K cocking tubes with no modificationHKP-17404$179.95 -
PTR-32 (7.62x39) Barrel - 16 inch
PTR
$249.95PTR-32 (7.62x39) Barrel - 16 Inch Specifications: 16.25" overall length Chambered in 7.63x39mm Fully Fluted with 12 flutes Match grade Please Note: PTR barrels have a thicker profile, and your front sight tower must be reamed for proper...HKP-02200$249.95 -
RCM HK P30 & P30S 9mm Barrel - Non-Threaded
RCM
$206.25RCM HK P30 & P30S 9mm Barrel - Non-Threaded Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest replacement barrel for the HK P30 9mm pistol, ideal as...HKP-16687$206.25 -
RCM HK53 .300 BLK Barrel - Threaded 5/8x24
RCM
$239.95RCM HK53 .300 BLK Barrel - Threaded 5/8x24 Each barrel was designed for use with the wildly popular AAC style quick detach muzzle breaks and suppressors with the 5/8x24 thread pitch. Although, this barrel is perfect for just about any .300 BLK suppressor...HKP-13907$239.95 -
H&K HK P2000 .40 S&W Barrel - Black
H&K Heckler & Koch
$239.95HK factory German P2000 .40 SW 3.62" Barrel This is a great spare or replacement barrel to have on hand. Specifications: .40 S&W Caliber 3.62 inches Genuine Heckler and Koch PartHKP-01127$239.95 -
H&K HK P30L .40 Cal Barrel - Black
H&K Heckler & Koch
$234.95HK German P30L .40 S&W Factory Barrel - German HK Factory German P30L .40 Cal 4.45" barrel perfect for replacement or for that project barrel. Compatible With: HK P30L HK P30, P30S (will be extended from the slide)HKP-02411$234.95 -
$139.95 -
H&K HK USP Elite 9mm Barrel - Black
H&K Heckler & Koch
$699.95HK USP Elite 9mm Barrel - BlackHKP-01760$699.95 -
Out Of Stock
H&K HK VP40 Barrel - Black
H&K Heckler & Koch
$229.95Brand New HK German Standard Length VP40 Barrel. Cold Hammer Forged & Make in Germany. Compatible With: HK VP40 VP40 Tactical ModelsHKP-18722$229.95 -
H&K MP5K PDW 10mm Barrel - Threaded 9/16x24 - 3-Lug
USA
$299.95H&K MP5K PDW 10mm Barrel - Threaded 9/16x24 - 3-Lug This US-made MP5KN PDW 10mm barrel features a 9/16x24 thread pitch and a 3-lug design. It is a rare and hard-to-find barrel, with only a few available. Ideal for enhancing your MP5K PDW, this barrel...HKP-02317$299.95 -
H&K MR556 Slimline Barrel, 16.5"
H&K Heckler & Koch
$889.95Genuine HK MR556 Slimline 16.5" Barrel. Non-chrome-lined for match accuracy. Compatible With: HK MR556HKP-21322$889.95 -
HK P30, P30S .40 Barrel - Black
H&K Heckler & Koch
$274.95HK P30, P30S .40 Barrel - Black New HK German P30 standard factory length.HKP-02412$274.95 -
HKP .40 S&W Thread Protector - Threaded 9/16x24 RH
HKP HK Parts
$14.95HKP .40 S&W Thread Protector - Threaded 9/16x24 RH The HK Parts 9/16x24 Thread Protector is specifically designed for .40 S&W handgun barrels with 9/16x24 right-hand threading, compatible with HK, Glock, Sig, SW, and more. Essential...HKP-17032$14.95 -
HKP HK MR556/416 Upper 8" 416C Style Conversion Kit
HKP HK Parts
$1,285.95MR556 & HK416 Upper Conversion Kit - 8" - 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 upper or barrel...HKP-18629$1,285.95 -
HKP/H&K P2000 9mm Dimpled Barrel - Threaded 13.5x1
HKP HK Parts
$229.95HKP/H&K P2000 9mm Dimpled Barrel - Threaded 13.5x1 Each barrel is expertly crafted from ordnance grade steel, heat treated, and finished with a premium nitride coating. The dimpled design adds aesthetic appeal, while the fitted O-ringed thread...HKP-18413$229.95 -
Out Of Stock
MM HK UMP 9mm Conversion Kit
Michaels Machines
$989.95HK UMP & USC 9mm Conversion Kit US Made - 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in with...HKP-02286$989.95 -
RCM HK MP5K & MP5KN 9mm Barrel – Threaded 1/2x32 – 3–Lug
RCM
$299.95RCM HK MP5K & MP5KN 9mm Barrel – Threaded 1/2x32 – 3–Lug Machined from a cold hammer forged blank, this MP5KN (PDW) barrel meets the latest specifications with factory-correct, updated 16 flutes in the chamber. Featuring a three-lug...HKP-20806$299.95 -
RCM HK MP5K 10mm Barrel - Threaded 14x.75
RCM
$279.95RCM HK MP5K 10mm Barrel - Threaded 14x.75 Upgrade your MP5K with the RCM HK MP5K 10mm Barrel, featuring a precise 14x1.75 threading for optimal accessory compatibility. Expertly crafted to enhance performance and reliability, this barrel is perfect for...HKP-21155$279.95 -
RCM HK MP5K 10mm Barrel - Threaded 9/16x24
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 -
RCM HK P2000 .40 S&W Barrel - Threaded 14.5x1 LH
RCM
$225.00RCM HK P2000 .40 S&W Barrel - Threaded 14.5x1 LH Each P2000 .40 tactical barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra-desirable nitride finish. This is the finest threaded...HKP-16942$225.00 -
RCM HK USPC 9mm Barrel - 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. This is the finest replacement barrel for the HK USPC 9mm pistol, ideal as a spare or for...HKP-16704$199.95 -
RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH
RCM
$164.95RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH These are the finest US-made barrels available and come highly recommended by HKParts. Specifications: Made In The USA Threaded 15x1 RH Counts As 1 US Made 922r Compliant Part Cold Hammer Forged...HKP-02400$164.95 -
RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28
RCM
$204.95RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 Each barrel is hand-selected from the finest cold hammer forged (CHF) 41V45 steel blanks, expertly profiled and chambered in the desirable 16 flute chamber profile. Finished with a durable...HKP-17762$204.95 -
Out Of Stock
H&K 21E/23E (7.62x51/.308) & (5.56/.223) Barrel Case w/ Sling - 18 inch Barrels
H&K Heckler & Koch
$0.00HK German 21/23 Barrel Carrying Case W/ Sling (All Steel Heavy Duty) For All HK21/23 17.75 (18&) Inch Barrels. Rare and now out of production.HKP-00586$0.00 -
Out Of Stock
H&K 21E/23E (7.62x51/.308) & (5.56/.223) Barrel Case With Sling - 22 inch
H&K Heckler & Koch
$0.00HK German 21/23E Barrel Case With Sling (All Steel Heavy Duty) For All HK21/23E - 22 Inch BarrelsHKP-01151$0.00 -
H&K HK 93, HK 33 Barrel, NIW 1 in 7, RARE
H&K Heckler & Koch
$1,887.95Rare Barrel - NIW 1 in 7 - HK93, HK33: New HK93/33 NIW 1 in 7 twist (super rare) barrel with long flash hider pinned by HK to reach the legal 16" barrel length. Factory-installed sight tower with sight/sling eyelets and factory finish. These are...HKP-19344$1,887.95 -
H&K HK 940 .30-06 Rifle Barrel
H&K Heckler & Koch
$948.95H&K HK 940 .30-06 Rifle Barrel We understand how challenging it can be to find rare and hard-to-find components for your firearms, which is why we are pleased to present an exceptional opportunity to acquire a replacement barrel for the HK940 in ...HKP-21605$948.95 -
Out Of Stock
H&K HK MR556/416 Titanium Barrel Nut
HKP HK Parts
$99.95Titanium HK MR556, HK 416 Barrel Nut Or Socket For Barrel A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in the removal and installation processes. Made in the USA...HKP-17275$99.95 -
H&K HK P30, P30S 9mm Barrel - Black
H&K Heckler & Koch
$269.95New HK German P30, P30S Standard 9mm Factory Barrel Brand new factory German HK P30, P30S 9mm Standard Length Barrel - 3.85" Cold hammer Forged, date coded, and proofed barrel.HKP-01828$269.95 -
H&K HK USC 45 Barrel - Used
H&K Heckler & Koch
$695.95Barrel - HK USC 45 in Exc + shape HK German factory USC 45 barrel in excellent + condition. Rare and hard to find.HKP-20471$695.95