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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Out Of Stock
HKP HK UMP (9mm) Standard Barrel
HKP HK Parts
$299.95HK UMP 9mm Barrel US made replica of the HK UMP 9mm barrel. Counts as one US made compliant part as an added bonus.HKP-18640$299.95 -
Out Of Stock
HKP HK UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug
HKP HK Parts
$399.95HKP H&K UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug New USA made .45 ACP 8" barrel for the UMP or Omega firearms. Each barrel is threaded 16x1 RH and 3-Lug tipped. The finest barrel for the UMP .45 ACP on the market. Specifications: Overall Length...HKP-18511$399.95 -
Out Of Stock
HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28
HKP HK Parts
$679.95HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with...HKP-02287$679.95 -
Out Of Stock
HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug
HKP HK Parts
$999.95HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug 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 total...HKP-02285$999.95 -
Out Of Stock
MFI MP5K 9mm Barrel Extension/Faux Suppressor - 3-lug
MFI
$179.95MFI MP5K 9mm Barrel Extension/Faux Suppressor - 3-lug Each faux suppressor is designed to attach to the 3 lug MP5K 3 lugged barrel and can be permanently attached (blind pinned) in place to get the overall length of 16.25"overall. Perfect for that rifle...HKP-18007$179.95 -
On Sale
MKE 16" Barrel for HK94 & SP5L - USED
MKE
Now: $299.95Was: $389.95MKE 16" Barrel for HK94 & SP5L - USED Used MKE 16" barrel for the HK94 and SP5L platform. THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99051Now: $299.95Was: $389.95 -
Out Of Stock
MM HK 21 (7.62x51/.308) Trunnion
H&K Heckler & Koch
$0.00US Made HK21 Trunnion By Michael's Machine (MM) These are the finest US-made trunnions available.HKP-00246$0.00 -
Out Of Stock
MM HK 23E (5.56/.223) Light Rifle Barrel
Michaels Machines
$0.00HK 23E (5.56/.223) Light Rifle Barrel Brand new US-made custom rifle barrel. 17.75-inch barrel includes the flash hider and the factory-correct barrel handle 1 x 9 twist. This has a lighter profile to save on weight...HKP-02514$0.00 -
PTR PDW (7.62x51/.308) 9 inch Barrel
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: PTR barrels have...HKP-02788$189.99 -
On Sale
RCM HK 51K Barrel & Trunnion Assembly
RCM
Now: $207.95Was: $279.95RCM HK 51K Barrel & Trunnion Assembly The HK 51K barrel front end is an essential starting point for your custom build. This front-end kit is 1/4 of the way to a complete parts kit, ready to be pinned to your receiver flat. Whether you're assembling...HKP-99018Now: $207.95Was: $279.95 -
RCM HK G3/91 Threaded Barrel - 5/8x24 - CHF
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 -
RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug
RCM
$279.95RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug This is the ultimate US-made barrel for any new or conversion build for the MP5K .40 cal. Crafted from top-grade CHF 41v40 material, it’s machined to impeccable standards. With the correct...HKP-21585$279.95 -
RCM HK P30 .40 to 9mm Conversion Barrel - Threaded - 13.5x1
RCM
$214.95RCM HK P30 .40 to 9mm Conversion Barrel - Threaded - 13.5x1 This 9mm conversion barrel is a drop-in replacement that allows your P30 to shoot the popular 9mm cartridge. Comes with a thread protector. Each barrel is made from ordnance-grade steel,...HKP-21786$214.95 -
Out Of Stock
RCM HK VP40 .40 S&W Tactical Barrel - Threaded 9/16x24
RCM
$212.50RCM HK VP40 .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 finest threaded barrel for the HK VP40 .40 S&W pistol,...HKP-17370$212.50 -
RCM HK23E Barrel - CHF
RCM
$699.95RCM HK23E Barrel RCM HK23E light profile barrels are made from mil-spec 41V50 CHF blanks that are fully salt bath nitrided for optimal wear and corrosion resistance. These barrels are the finest out there to complete your HK23E or HK13 build. These are...HKP-21837$699.95 -
On Sale
RCM HK33K (5.56/.223) Barrel - Threaded 15x1 - USED - BLEMISHED
RCM
Now: $172.95Was: $234.95RCM HK33K (5.56/.223) Barrel - Threaded 15x1 - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Enhance your HK33K with the RCM 12.7"...HKP-02319-BNow: $172.95Was: $234.95 -
Out Of Stock
RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28
RCM
$249.95RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 Each barrel is meticulously crafted from premium cold hammer forged (CHF) 41V45 steel, expertly profiled and chambered with a 16-flute chamber profile. Finished with a highly durable nitrided coating for...HKP-17761$249.95