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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Out Of Stock
HK416A5, MR556, MR762 Rail Cover Set - RAL8000
H&K Heckler & Koch
$69.95H&K HK MR556/MR762/HK416 A5 Rail Cover Set - RAL 8K Brand new Heckler & Koch HK 416 A5 Style Picatinny rail covers made of high impact HK polymer. Each rail is equipped with a quick release tab & marked with the HK logo...HKP-17705$69.95 -
HK416, MR556 Buffer Tube Castle Nut
H&K Heckler & Koch
$34.95Heckler and Koch Castle Nut for Buffer Tube for HK416 and HK MR556 New HK German manufacture. This buffer tube castle nut will fit both mil-spec and commercial buffer tubes. All steel manufacture. With HK round tool attachment points as well as...HKP-15230$34.95 -
On Sale
HK MP5, MP5K, AP5-P Optic Mount - Picatinny
MKE
Now: $44.95Was: $49.95MKE HK MP5K, AP5P OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5K platform. OEM part for the Century AP5-P and AP5-M. This rail is the K specific length but is compatible with full size MP5 guns as well. Compatible With: HK...HKP-22334Now: $44.95Was: $49.95 -
HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Pinky Rest
H&K Heckler & Koch
$12.95H&K 8 Round HK USPC/45C .45 ACP Floorplate w/ Pinky Res HK factory German, vintage style, all polymer 8 round magazine floor plate with finger rest. This floorplate can become cracked and worn with use and is a great spare part to have on hand. Made...HKP-01199$12.95 -
HK MP5 Lighted Handguard -Surefire 628LMF
Surefire
$579.95Surefire - 628LMF - Lighted Forearm The 628 LMF generates 1000 lumens of output and has a tactical runtime of 2 hours per set of batteries, with gradually decreasing output afterward. Surefire 628LMF Features: Virtually indestructible LED and...HKP-03285$579.95 -
HK MP5, HK33, HK53, HK93 Trigger Housing - SEF Navy - Polymer - Push Pin - 9mm, 5.56 / .223
H&K Heckler & Koch
$129.95H&K MP5 & 93/53/33 (9mm & 5.56/.223) SEF Navy Style Polymer Housing - Push Pin Upgrade your older SEF contoured trigger pack with this Navy Style polymer housing, designed to enhance the look and feel of your HK firearm. Specifications: Push...HKP-02462$129.95 -
HK91, G3 Bolt Locking Lever Set
H&K Heckler & Koch
$24.95HK91, G3, & PTR-91 .308 HK Bolt Carrier Bolt Locking Lever Set This is the bolt carrier locking lever set that retains the bolt head to the carrier. Each Locking Lever Set Includes: 7.62 locking lever Locking lever axle...HKP-02683$24.95 -
HK MP5, MP5K Magazine Release Set
H&K Heckler & Koch
$184.95Heckler and Koch Magazine Release Set for HK MP5 and HK MP5K This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build. Set...HKP-02402$184.95 -
On Sale
HK VP9, P30 +15 Magazine Extension
HKP HK Parts
$17.95 - $23.95HKP HK VP9/P30 +15 Magazine Extension The HK Parts manufactured HK pistol mag extension allows the user to convert existing VP9, P30, P2000, & USPC magazines to an enhanced magazine capacity. Each mag extension is made from next-generation enhanced...HKP-16857-M$17.95 - $23.95 -
On Sale
HK33, HK53, HK93 Extractor
RCM
Now: $24.95Was: $29.95RCM HK 93/53/33 (5.56/.223) Extractor New US-made HK RCM HK 93, HK 33, HK 53 .223/5.56 Extractor. Each unit is made with an enhanced material and polished for optimum feeding and extraction. This is simply the finest HK93,33,53 extractor available. A...HKP-14962Now: $24.95Was: $29.95 -
On Sale
Picatinny Vertical Foregrip - LED Light - Quick Detach
UTG
Now: $89.95Was: $105.95UTG Vertical Grip With LED Light & Quick Detach Mount Features: UTG combat aluminum foregrip with integral LED flashlight Cree Q5 LED diodes Integrated reflector and light bulb to provide instant spot focus for clear object...HKP-13184Now: $89.95Was: $105.95 -
On Sale
HK MP5, HK94 Cocking Tube
HKP HK Parts
Now: $63.95Was: $79.95New HKP HKP Parts HK MP5, HK94 Cocking Tube Features include an enlarged charging handle, clamping pin, and access hole, as found on the latest style MP5F 40/10 cocking tube. Compatible With: HK MP5 HK94 Custom HK MP5, HK94 style buildsHKP-01843Now: $63.95Was: $79.95