Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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On Sale
HK MP5K Handguard with Handstop - M-LOK Compatible
HKP HK Parts
$31.95 - $39.95MP5K - M-LOK Compatible Forearm with Handstop - USA Each forearm will fit the MP5K style platforms. Dual M-LOK mounting slots allow you to quickly mount lights, lasers, or a pressure switch. As an added bonus this item counts as a US made part toward...HKP-20819-M$31.95 - $39.95 -
On Sale
HK VP9, P30, HK45 Optic Plate - Trijicon RMR, Holosun, Swampfox - Red Dot Pistol Mount
HKP HK Parts
Now: $39.95Was: $49.95Trijicon RMR Pistol Mount RMR mounting plate to allow the use of the following: Trijicon RMR & SRO models Holosun HE407C / HE407C X2 / HE507C / HE507C X2 / HS407C / HS407C X2 / HS507C / HS507C X2, 508T Swampfox Kingslayer / Liberty /...HKP-18503Now: $39.95Was: $49.95 -
On Sale
HK VP9, VP40 Magazine Release - Enhanced
HKP HK Parts
Now: $39.95Was: $49.95Enhanced Magazine Release - Alloy - HK VP Series The oversized magazine release increases the overall surface area and makes it possible to release the magazine without changing the position of your grip. Made in the USA from 6061 billeted aluminum...HKP-21099-MNow: $39.95Was: $49.95 -
On Sale
HK91, G3 Cocking Handle - Compliant - US
PTR
Now: $21.95Was: $25.95HK U.S. Made Cocking Handle - PTR Manufactured Compliant parts are hard to find and important for keeping your HK G3 and HK 91 build 922r compliant.HKP-00376Now: $21.95Was: $25.95 -
Out Of Stock
HK P30L Compensator - MOD 1 - XL
HKP HK Parts
$179.95HK Parts MOD 1 XL Compensator - HK P30L The MOD 1 XL comp delivers the iconic look of our original rail mount comp, but in our updated MOD 1 structure. Like all MOD 1 comps, the P30L XL adds the versatility of an interchangeable Picatinny rail or a...HKP-22099$179.95 -
HK VP9, P30 Magazine Loader - 9mm, .40 S&W
H&K Heckler & Koch
$19.95Heckler and Koch HK P30, HK VP 9mm / 40S&W Magazine Loader - Black Compatible With: VP9 VP9F VP9K VP9X VP9L VP9SK VP9 Tactical VP9 Tactical OR VP9 Match VP40 P30, P30L, P30SK P2000, P2000SKHKP-01164$19.95 -
HK USP40 Magazine - .40 S&W - 10 Round
H&K Heckler & Koch
$58.95 - $59.95Heckler and Koch 10 Round .40 S&W Magazine for USP40 Heckler and Koch 10-round magazine for full-size USP40 pistols chambered in .40 S&W. Factory magazine for proper fit and function on full-size USP40 variants. Compatible...HKP-01205-M$58.95 - $59.95 -
On Sale
M-LOK Rail Section - 5 Slot
Magpul
Now: $15.95Was: $18.95Magpul M-LOK 5 Slot Rail Section Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined...HKP-19568Now: $15.95Was: $18.95 -
On Sale
HK MP5, MP5K 9mm Muzzle Brake - 3-Lug - QD
HKP HK Parts
Now: $98.95Was: $109.95HKP MP5, MP5K 9mm Muzzle Brake - 3-Lug Easily attaches to MP5-spec. 9mm tri-lug barrels. This HK muzzle brake features the new style locking latch that seats flush and doesn't come off while shooting like the 1st generation style were prone to...HKP-20323Now: $98.95Was: $109.95 -
On Sale
HK VP9SK Rail Mount Compensator
HKP HK Parts
Now: $99.95Was: $169.95HKP HK VP9SK Rail Mount Compensator Specifications: Length - 3 1/2 inches Height - 1 3/4 inches Weight - 4.8 oz. Torque: Bottom Screws - 26 inch-lbs Side Screws - 18 inch-lbs Not to be used with a threaded barrel DISCLAIMER: Improper installation...HKP-20037Now: $99.95Was: $169.95 -
On Sale
HK USP45, Mark 23 +10 Magazine Extension
HKP HK Parts
Now: $55.95Was: $69.95Magazine Extension - +10 - HK USP .45 & Mark 23 Easy to install. Simply add the mag extension to your existing mag body and follower. No gunsmithing needed. Made 100% in the USA out of aircraft-grade hard coat anodized aluminum with steel hardware...HKP-21371-MNow: $55.95Was: $69.95 -
HK USP, Mark 23 Recoil Assemblies Snap Ring
H&K Heckler & Koch
$5.95H&K HK USP/Mark 23 Recoil Assemblies Snap Ring The snap ring secures the spring onto the recoil buffer spring assembly. This part can come loose and become lost or easily worn. Once you remove them, HK suggests replacing them with a new snap ring...HKP-01258$5.95