HK MP5/K & SP5/K Barrels
Optimize your MP5, SP5, or HK clone with premium barrels. Choose from HK factory barrels, threaded options for suppressors, and top-tier aftermarket brands like RCM for enhanced accuracy.
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RCM MP5 9mm Trunion
RCM
$74.95RCM MP5 9mm Trunion US made to exact factory HK specifications and machined completely from ordnance grade steel and heat treated to factory specs. Compatible with: MP5, 94 MP5K SP89 Clones or other custom buildsHKP-01193$74.95 -
HKP MP5 9mm Barrel Extension
HKP HK Parts
$49.95MP5 3-Lug Barrel Barrel Extension, Fake Suppressor US made MP5, HK94 solid aluminum fake suppressor, barrel extension. That slips over the 3-lug 9mm MP5 barrel and then pinned in place to meet the overall 16" barrel length required for rifle builds...HKP-18000$49.95 -
B&T MP5K, SP5K, SP89 - 3 Lugged & Threaded Barrel - 1/2 X 28
B&T Brugger & Thomet
$399.95B&T Manufactured MP5K, SP89 & SP5K - PDW Barrel 3 Lug - 1/2 X 28 New from B&T Switzerland, cold hammer-forged (CHF), properly fluted & nitrided MP5K/SP5K barrels manufactured exclusively for the HK SP5K. The firearms community has long...HKP-17894$399.95 -
HKP MP5 9mm Navy Barrel - 3 Lug & Threaded 1/2 X 28
HKP HK Parts
$179.95MP5 9mm Navy Barrel 3 Lug & Threaded - 1/2 X 28 High quality, US-made MP5-N barrel. Built to last and finished in resiliant Nitride. Precision milled to the latest specs with the factory correct and updated 16 flutes in the chamber. Three lug &...HKP-17926$179.95 -
RCM HK MP5K/MP5K-N 1/2 X 28 3 Lug Barrel - Black
RCM
$199.95Barrel - 1/2 X 28 - 3 Lug - MP5K, MP5K-N Machined from a Cold Hammer Forged Blank to the latest spec MP5K-N (PDW) barrel with the HK factory correct and updated 16 flutes in the chamber. 3 lugged & threaded & manufactured to meet the...HKP-19330$199.95 -
RCM HK34 MP5 9mm Barrel - 16.5" - CHF
RCM
$264.95RCM HK34 MP5 9mm Barrel - 16.5" - CHF Each barrel is hand-selected from the finest cold hammer forged steel (CHF) 41V45 barrel blanks. Expertly profiled and chambered in the desirable 16-flute chamber profile. Each barrel is finished with the...HKP-00927$264.95 -
RCM MP5K/SP89/SP5K 9mm RS Trunion
RCM
$74.95MP5K, Reverse Stretch- TrunionUS made to exact factory HK specifications for the HK MP5K, SP89 9mm builds. There is a difference between the MP5K and the MP5 trunion. This offering is the correct trunion for the MP5K and all MP5K PDW Variants. Including...HKP-02242$74.95 -
H&K MP5, MP5K 3 Lug Blank Firing Adapter
H&K Heckler & Koch
$139.95New HK German MP5, MP5K-N 3 Lug QD Blank Firing Adapter. Attaches to the end of the 3-lug barrel tip & will allow the use of 9mm blanks for training. A brand new HK German manufactured part.HKP-01990$139.95 -
RCM MP5 SD Barrel CHF
RCM
$189.95MP5 SD Barrel CHF - RCMMade in the USA of Cold Hammer Forged (CHF) Steel. This is the highest quality, best valued US made MP5 SD barrel available. This high quality barrel is processed using the highly desirable Nitride process which creates a super...HKP-02118$189.95 -
HKP MP5K 9mm Trunion
HKP HK Parts
$57.95HK MP5K Trunion - USA US made to exact factory HK specifications for the HK MP5K type builds. Machined completely from ordnance grade steel and heat treated to factory specs. These are the best USA made trunions on the market. Machined to HK spec...HKP-17964$57.95 -
HKP MP5K 9mm Fake Suppressor/Barrel Extension
HKP HK Parts
$59.95MP5K 3-Lug Barrel Barrel Extension, Fake Suppressor US made MP5K solid aluminum fake suppressor, barrel extension.Slips over the 3-lug MP5K PDW barrel and then pinned in place to meet the overall 16" barrel length required for rifle builds. Made in one...HKP-18001$59.95 -
B&T MP5 - 3 Lugged & Threaded Barrel - 1/2 X 28
B&T Brugger & Thomet
$378.95B&T MP5 - 3 Lugged & Threaded Barrel - 1/2 X 28 New from B&T Switzerland, cold hammer forged (CHF), properly factory specification fluted & nitrided MP5 barrels manufactured exclusively for MP5's.The firearms community has long known of...HKP-17955$378.95 -
HKP MP5-SD 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set
HKP HK Parts
$2,499.95MP5 SD 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a pistol (N/A) rifle, or SBR build.This is the first time that these iconic kits have...HKP-18052$2,499.95 -
HKP MP5 40/10 Trunion
HKP HK Parts
$139.95MP5 40, MP5 10mm TrunionUS made to exact factory HK specifications for the HK MP5, 40/10mm trunion type builds. Machined completely from ordnance grade steel and heat-treated to factory specs.Each has the bullet guides pre-installed and included. These...HKP-02737$139.95 -
HKP MP5 .40 S&W Threaded & 3-Lugged Barrel
HKP HK Parts
$249.95MP5 .40 Cal 3-Lug & Threaded - 9/16 X 24Newly manufactured US Made  Melonited (nitride) MP5 .40 barrel that is 3 lugged and threaded with matching thread protector. This is a barrel offering that is made to the highest standards and tolerances and...HKP-16402$249.95 -
HKP MP5SD 9mm Barrel
HKP HK Parts
$169.95HK MP5-SD 9mm BarrelMade in the USA of 416 Stainless Steel. This high quality barrel is processed using the highly desirable Nitride process which creates a super hard durable finish. Precision milled to the latest specs with the factory correct and...HKP-17755$169.95 -
$299.95 -
RCM MP5 3 Lug barrel - CHF
RCM
$189.95MP5 Cold Hammer Forged Barrel 9mm 3-lug BarrelMade in the USA of Cold Hammer Forged (CHF) Steel. This is the highest quality, best valued US made MP5 barrel available. Each high quality barrel is processed using the highly desirable Nitride process...HKP-02040$189.95 -
H&K, B&T HK MP5 Swiss & German Parts Kit With B&T Folding Pistol Brace
$2,399.95HK German MP5 made with Swiss Marked & Proofed HK MP5 Parts KitNever before offered or available anywhere or from any company. This is a one time offering only available here at HK Parts.Each HK MP5 parts kit includes the following: German demilled...HKP-19477$2,399.95 -
Out Of Stock
HKP MP5K/SP89/SP5K 9mm PDW Threaded Barrel - 1/2 X 32
HKP HK Parts
$169.95Premium HK MP5K-N 9mm Barrel Threaded 1/2 X 32Precision milled to the latest spec MP5K-N (PDW) barrel with the HK factory correct and updated 16 flutes in the chamber. 3 lugged & threaded & manufactured to meet the specs of all suppressors and...HKP-16968$169.95 -
B&T MP5K/SP89/SP5K 9mm 3 Lugged & Threaded Barrel - 1/2 X 32
B&T Brugger & Thomet
$399.95B&T Manufactured MP5K, SP89 & SP5K - PDW Barrel 3 Lug - 1/2 X 32 New from B&T Switzerland, cold hammer-forged (CHF), properly fluted & nitrided MP5K/SP5K barrels manufactured exclusively for the HK SP5K. The firearms community has long...HKP-17908$399.95 -
RCM HK MP5 10mm 9/16 X 24 Barrel
RCM
$299.95RCM HK MP5 10mm Barrel 9/16 X 24 with Thread ProtectorHKP-21158$299.95 -
B&T MP5 - 3 Lugged & Threaded Barrel - 1/2 X 32
B&T Brugger & Thomet
$449.95New from B&T Switzerland, cold hammer forged (CHF), properly factory specification fluted & nitrided MP5 barrels manufactured exclusively for MP5's.The firearms community has long known of the close working relationship between H&K Germany...HKP-17956$449.95 -
H&K MP5 9mm Parts Kit 100% German - A2 Stock & FBI Lower
H&K Heckler & Koch
$2,299.95HK German MP5 9mm Used Parts Kit Complete MP5 Parts Kit - 9mm(Minus Receiver Of Course).All MP5 Kits:100% German Parts HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube Front Sight Tower Wide Fore arm - Black Bolt Group - MP5 Full Auto 2 small and 1...HKP-01911$2,299.95 -
HKP MP5 40/10 Fake Suppressor/Barrel Extension
HKP HK Parts
$69.95HKP MP5 40/10 Fake Suppressor/Barrel Extension This fake suppressor is used as a barrel extension to bring your H&K MP5 40/10 8.85" barrel to legal conforming standards of 16" so you do not have to register the weapon as an SBR. This fits over the...HKP-00889$69.95 -
RCM MP5K/SP89/SP5K 9mm 3-Lug Barrel - CHF
RCM
$169.95Premium Cold Hammer Forged HK MP5K 3-Lug 9mm BarrelThe only US made barrel using the same steel & CHF process that Heckler & Koch uses themselves. Precision milled to the latest spec MP5K-N (PDW) barrel with the HK factory correct & updated...HKP-01764$169.95 -
HKP 9mm Birdcage Style Flash Hider - 1/2 X 28
HKP HK Parts
$24.95HK Bird Cage Style Flash Hider - 1/2 X 28 Thread Compatible with all 1/2 X 28 barrels up to 9mm in caliber for the opening of the hole diameter. Perfect for that HK build or other style firearm where you want the look and feel of the iconic HK...HKP-17627$24.95 -
RCM MP5-N 9mm Barrel - Threaded 1/2 X 32 & 3 Lug
RCM
$194.95Made in the USA of Cold Hammer Forged (CHF) Steel. This is the highest quality, best valued US made MP5-N barrel available. This high quality barrel is processed using the highly desirable Nitrite process (same process as Sig Sauer uses on all barrels)...HKP-16967$194.95 -
H&K MP5-A2 .40 S&W German Parts Kit
HKP HK Parts
$3,899.95HK MP5 40 S&W A German Parts Kit - Used Includes: Barrel - 3 lugs, threaded, and cold hammer-forged Trigger Group - Ambidextrous Navy 0,1, F Trigger Group A2 Fixed Stock Bolt Group Mp5 40 F/A Forearm - Standard wide black polymer Rear Sight...HKP-00891$3,899.95 -
HKP MP5SD 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set - SEF Binary Trigger
$2,849.95MP5 SD 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a pistol (N/A) rifle, or SBR build.The SEF Franklin Armory Binary trigger group is the...HKP-20524$2,849.95 -
USA Barrel Extension Faux Suppressor - 15 X 1 RH
USA
$179.95Threaded barrel extension, Fake suppressor – USA Total weight is 14 oz made from steel & aluminum, overall diameter is 1.4 inches. Perfect for that rifle build or for those looking for the MP5K-N suppressed look. This fake suppressor is...HKP-20890$179.95 -
H&K MP5-N Parts Kit 100% German - A3 Stock & Navy 3 Position Lower - RARE
H&K Heckler & Koch
$4,499.00MP5-N Parts kit. Just in only a couple available. All German HK MP5 Navy parts kit with 3 lug and threaded barrel, Action 3 bolt group, A3 retractable stock, 3 position navy lower, one 30 round curved magazine. All German HK parts kit demilled from PD...HKP-15172$4,499.00 -
MP5K .40 S&W 3 Lug & Threaded Barrel
$299.95US Made MP5K-PDW 40 Barrel that is threaded and 3 lugged with a 9/16 x 24 thread protector. Rare & hard to find only a few are available.HKP-02318$299.95 -
RCM HK MP5K 1/2 X 32MM 3 Lug Barrel
RCM
$199.95Barrel – 1/2 X 32 – 3 Lug – MP5K, MP5K-N Machined from a Cold Hammer Forged Blank to the latest spec MP5K-N (PDW) barrel with the HK factory correct and updated 16 flutes in the chamber. 3 lugged & threaded & manufactured to meet the specs of all...HKP-20806$199.95 -
$299.95 -
DTAC HK MP5SD Front End Kit
DTAC Dakota Tactical
$1,199.95Dakota Tactical HK MP5SD Front End Kit If you have wanted to convert that MP5 or SP5 to an SD but didn't know where to start, look no further. Our kit provides all necessary components (aside from suppressor) to do so. With a DTAC Cage and SD guard...HKP-21318$1,199.95 -
H&K HK MP5-40 Factory Barrel
H&K Heckler & Koch
$1,495.00Threaded Barrel - 3-Lugged- NIW - HK MP5 .40New MP5 .40 barrel.Factory-installed sight tower with sight/sling eyelets and factory finish. Rare & hard to find only a few are available. This is a one time offering never to be available again as these...HKP-19349$1,495.00 -
H&K MP5 .40 S&W Threaded & 3-Lugged Barrel
H&K Heckler & Koch
$599.95H&K MP5 .40 S&W Threaded & 3-Lugged Barrel German HK Barrel that is threaded and three lugged with the factory correct thread pitch (14 x .75) and thread protector. Pulled out from demilled MP5/40's, this is a rare part, and only a few are...HKP-01638$599.95 -
Out Of Stock
H&K MP5 .40 S&W Parts Kit
HKP HK Parts
$2,699.95HK MP5 .40 Pistol German Parts Kit - Used.Genuine German HK MP5 40 parts kit in the pistol configuration Barrel - 3 lugged & threaded, cold hammer-forged Trigger Group - Ambidextrous Navy 0,1, F Trigger Group or SEF Navy your choice A1 US-made end...HKP-16719$2,699.95 -
HTA HK MP5SD Barrel Cleaning Tool
HiTec Arms
$119.95HTA HK MP5SD Barrel Cleaning Tool Barrel cleaning brush tool for integrally suppressed ported barrels. This is a good tool to have on hand for any MP5SD owner to clean carbon build up and avoid your suppressor seizing on your barrel. Multiple colors...HKP-21347-M$119.95