Rifle / SMG Parts
Elevate Your H&K Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your H&K rifle with top-notch parts and accessories. From MP5 and MP5K to SP5 and UMP/USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, SP5K, G36, or MP5 22, we have the H&K rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HKP HK G36C Barrel Front End Kit
HKP HK Parts
$889.95G36C Barrel Front End Barrel Kit - 223/556 New production HK G36C style barrel conversion kit and front end kit. Each kit will include the necessary parts to build a G38/SL8 variant into the G36KC barrel length variant as pictured. All you need is this...HKP-18228$889.95 -
HKP HK MP5K Folding Stock w/ Adapter - Black
$269.95German Folding Stock with HK Parts Adapter - MP5K German folding stock with MP5K HK Parts Adapter. The HK Parts adapter offers a QD attachment point and is made from hard coat anodized aluminum. Compatible With: MP5K SP5K In spec clonesHKP-19550$269.95 -
HKP HK UMP (.40 S&W) 15 Round Magazine
HKP HK Parts
$49.95UMP, SMG .40 Cal 15 Round Magazine - US Each ultra compact 15 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliberP conversions. Each magazine features, steel feed lips, enhanced polymer construction and all...HKP-17584$49.95 -
Magpul PMAG 40 Round AR-15 5.56/.223 Magazine
Magpul
$24.95Magpul PMAG 40 Round AR-15 5.56/.223 Magazine This magazine is the latest and greatest M3 model NON-windowed PMAG (Polymer Magazine) is a lightweight 5.56 NATO, M-16 compatible magazine. It features a pop-off storage/dust cover that alleviates pressure...HKP-16699$24.95 -
MP5K Complete Weldment Set
$59.95MP5K Complete Weldment Set Each set of weldments is all of the weldments required for an MP5K flat. Includes: Rear sight base Sight tab Case deflector Semi auto shelf Side reinforcement tabs 2 X rear stock bushingsHKP-16231$59.95 -
PTR Tactical Handguard Rail Screw
PTR
$0.69PTR Tactical Handguard Rail Screw The 6, 4, 3 & 2 inch rail sections use these screws to attach themselves to the tactical forearm. This is the screw that is used on all the tactical forearm rails (2 inch, 3 inch, 4 inch, 6 inch). A great spare to...HKP-16744$0.69 -
SB Tactical HK MP5K & SP5K SBA3 5 Position Adjustable Stabilizing Brace - Black
SB Tactical
$269.95SBA3 - 5 Position Adjustable Stabilizing Brace - MP5K / SP5K The perfect addition to your firearm with the ability to adjust length with its 5-position adjustable buffer tube. Dramatically enhances versatility, and features a minimalist design with an...HKP-20277$269.95 -
Out Of Stock
X Products HK 93/53/33 (5.56/.223) 50 Round Drum Magazine
X Products
$0.0050 Round Drum HK 93, 33, 53 & Clones, Custom Builds - X93, 33, 53 X Products 50 round drum for the HK93, 33, 53 family of firearms. Will fit all in-spec firearms made to German HK magwell specs. This is a special run and not a production item...HKP-17812$0.00 -
AIM HK 91/G3 (7.62x51/.308) Extended Carbine Length Handguard - M-LOK
AIM
$74.95HK G3 EXTENDED CARBINE LENGTH HANDGUARD- M-LOK The most innovative and modular HK variant handguard on the market, our M-LOK HK forend can be used with all modern and traditional shooting techniques. CNC machined aluminum construction makes for a solid,...HKP-18172$74.95 -
Bore Boss Pull-Through Bore Cleaner - 5.56mm/.223
Bore Boss
$10.95Real Avid Bore Boss Pull-Through Bore Cleaner - 5.56mm/.223 From the barrel of innovation comes the ultra-compact Bore Boss, the first-ever self-storing, easy-feeding, clean-pulling, field-ready, hassle-free, pure-genius bore cleaner. The single-piece...HKP-19402$10.95 -
H&K 93/53/33 (5.56/.223) Trigger Group - SEF Navy Style - Full Auto - Push Pin
H&K Heckler & Koch
$349.95HK German HK93, 33, 33K, 53 SEF Navy Style F/A Trigger Group Complete - Used ON SALE FOR A SPECIAL PROMOTION WHILE SUPPLIES LAST!!! Each trigger group is comprised of genuine Heckler & Koch products Includes: German Full Auto trigger pack with all...HKP-18189$349.95 -
H&K HK 417/MR762 Rear Diopter Sight
H&K Heckler & Koch
$224.95HK 417 & MR762 Rear Diopter Sight Specifications: Fits: 12", 16.5", 17", & 20" barrel lengths. Compatible With: HK MR762 HK 417 MR556 rifles Also made to fit the HK G28 firearmHKP-02547$224.95 -
H&K HK SL8, HK G36 Extended Bottom Rail Kit - Black
H&K Heckler & Koch
$99.95H&K HK SL8, HK G36 Extended Bottom Rail Kit - Black This rail is the factory correct HK German manufactured bottom rail for the G36 or SL8 rifle. This allows the longest rail on the bottom of the polymer forearm. 9.25" in length overall. Comes with...HKP-16549$99.95 -
H&K MP5 40/10 SEF F/A Trigger Pack Complete
H&K Heckler & Koch
$239.95HK German SEF Full Auto Trigger Pack Complete Factory HK German MP5 40 caliber full auto trigger pack is unmodified as it comes from HK. Our F/A trigger pack comes with a used factory German HK 40/10 caliber ejector lever and heavy hammer spring. Each...HKP-00151$239.95 -
H&K MP5/SP5 9mm Magazine Unloader
H&K Heckler & Koch
$119.95H&K MP5/SP5 9mm Magazine Unloader HK MP5 German Magazine Unloader for MP5, SP5, and HK94 9mm magazines. This part is compatible with the 30, 15, and 10-round factory magazines.HKP-00085$119.95 -
H&K MP5K Replacement Buffer For Factory End Cap or Folding Stock
H&K Heckler & Koch
$24.95H&K MP5K Replacement Buffer for Factory End Cap or Folding Stock This item is a Heckler & Koch Genuine Part, used to replace the factory HK buffer on MP5K folding stocks and end caps. This is only usable on the factory OEM stock and end cap. This...HKP-01233$24.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Complete Recoil Rod Assembly
H&K Heckler & Koch
$79.95HK USC/UMP 45/40/9mm Recoil Spring/Rod Assembly New HK German. This is great to have as a spare as this is a repair and replacement item. Compatible With: HK UMP 45 HK USC 45 HK UMP 40 HK UMP 9mmHKP-00610$79.95 -
HK G36 Backplate Complete w/ Recoil Assembly
USA
$84.95HK G36 Backplate Complete With Recoil Assembly New G36 Backplate with new G36/SL8 recoil buffer and recoil assembly. This assembly does include the recoil rod retaining screw. This is a great spare or replacement to have on hand. These are also required...HKP-18537$84.95 -
HK G36/SL8 (5.56/.223) Bolt Group Fork
USA
$10.95G36 & Sl8 Bolt Group Fork For Cocking Handle - USHKP-18774$10.95 -
HKP 50 Round GSG-522/GSG-16 Drum Magazine - Translucent
HKP HK Parts
$79.95HKP 50 Round GSG-522/GSG-16 Drum Magazine - Translucent Compatible With: GSG-16 GSG5 GSG5PK GSG522 GSG5-SD Please note: This magazine will not fit the HK Walther/Umarex MP5-A5 or SD models (we have one that works for the HK MP5 .22 in the MP5 .22...HKP-16234$79.95 -
HKP HK G36/SL8 (5.56/.223) Aftermarket Side Rail Left Or Right
HKP HK Parts
$25.95G36 & HK SL8 Aftermarket Side Rail Left Or RightHKP-00286$25.95 -
HKP MP5 9mm SEF Style 0,1 Trigger Pack - Safe, Semi Only
HKP HK Parts
$359.95HKP/H&K MP5/K 9mm SEF Semi-Auto Complete Trigger Pack We have one of the best HK gunsmiths in the country that can take hand-picked German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most precise machinery and...HKP-00152$359.95 -
HKP MP5SD 9mm Front End Kit
HKP HK Parts
$1,199.95HK MP5SD Front End Build Kit The HK Parts MP5SD front end kit includes everything required (except suppressor) to build an MP5SD front end including the best US and German components available. Each kit counts as 4 922r USA-made parts toward the...HKP-02399$1,199.95 -
HKP Single Point Sling - Dark Earth
HKP HK Parts
$29.95HKP Single Point Sling - Dark Earth This sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point HK sling. Features: Super thick all Dark Earth heavy-duty corduroy nylon to withstand years of heavy...HKP-09051$29.95 -
JMAC Universal Picatinny 8" Arm Bar with Brace Adapter
JMAC Customs
$279.85JMAC Arm Bar 8" Inch Rise with Brace Adapter and 1913 Folding Mech (A)rm(B)ar(8)inch(R)ise + AB-BA Brace Adapter + our 1913 Folding Mech (not assembled) Features: Modular Design - Brace/Stock with many mounting options Integrated QD Sling Socket 8"...HKP-21247$279.85 -
Magpul RSA - Rail Sling Attachment
Magpul
$29.95Magpul RSA - Rail Sling Attachment Attaches to Picatinny rails for an additional point of attachment for slings.HKP-02423$29.95 -
MI HK MP5K 1913 End Plate Adapter
MI Midwest Industries
$89.95MI HK MP5K 1913 End Plate Adapter The Midwest Industries Picatinny end plate adapter opens up a myriad of off-the-shelf stock and brace options. The adapter installs in the same manner as the factory end cap with a single pushpin. Modification may be...HKP-21584$89.95 -
Tapco HK 416/MR556/AR15 Stock Wrench
Tapco
$32.95Tapco HK 416, MR556, & AR15 Stock Wrench This tool includes a Mil-Spec castle nut wrench, a standard-length receiver extension removal wrench, and an A1/A2 Flash Suppressor wrench. This offers an improved grip, and each tool has a...HKP-02407$32.95 -
B&T MP5, HK33, G3, PTR - Mid Range Mount
B&T Brugger & Thomet
$129.95B&T MP5, HK33, G3, PTR - Mid Range Mount This scope mount will allow the the use of the HK fixed sights (through an oval opening) and also allowing the optic to sit higher thant the front sight tower for an unobstructed view. This will allow the use...HKP-16882$129.95 -
Out Of Stock
Geissele HK MR556/416 14.5" Super Modular Rail System - FDE
Geissele
$549.95Geissele HK416, MR556 14.5" Modular Rail - Desert Dirt Color (DDC) 13.625" overall length Geissele HK 416, MR556 free float rail with HK 416 14.5" barrel and MR 556 16.5" barreled upper. This is a direct replacement item for your HK MR556 and 14.5"...HKP-16462$549.95 -
H&K (5.56/.223) & (7.62x51/.308) Contact Piece For Paddle Mag Release
H&K Heckler & Koch
$29.95HK .223/556 & 308 Contact Piece For Paddle Magazine Release German HK manufacture. The contact piece is used in the magazine release assembly for the paddle mag release. Compatible With: HK 33, 53, 93 HK G3, 91, PTR91HKP-00465$29.95 -
H&K 91/G3 (7.62x51/.308) Complete Bolt Head - Enfield HK Contract - Used
H&K Heckler & Koch
$179.95HK G3 & HK 91 & PTR Bolt Head Complete - British Enfield - Exc/Like New Made On HK tooling & prints in the Enfield factory in Britain in 1988. Each bolt head is complete with the bolt head parts installed & 100% functional. Removed from...HKP-18423$179.95 -
H&K 91/G3 (7.62x51/.308) Slimline Forearm - OD Green - LIKE NEW
H&K Heckler & Koch
$24.95H&K 91/G3 (7.62x51/.308) Slimline Forearm - OD Green - LIKE NEW Like new German military surplus O.D. green slimline forearm with heat shield. For use on standard contour barrels not the thicker barrel profiles. Compatible With: HK G3 HK 91 HK PTR...HKP-21477$24.95 -
H&K HK MR556 M-LOK 16.5" Upper Receiver Assembly - Black
H&K Heckler & Koch
$1,779.95New HK Factory German MR556 Upper Kit with M-LOK forearm Includes: Complete MR556 upper receiver with M-LOK forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL required as the...HKP-17366$1,779.95 -
H&K HK MR556/HK416 FFRS Retaining Spring
H&K Heckler & Koch
$7.99H&K HK MR556/HK416 FFRS Retaining Spring The retainer spring retains the handguard locking pin on the Free Floating Rail System (FFRS). These can become damaged with the removal of the handguard screws. Once the spring is damaged, they have to be...HKP-02617$7.99 -
H&K HK91, G3, PTR Parkerized Backplate & Recoil Rod Assembly - Parkerized
H&K Heckler & Koch
$34.95Parkerized Backplate - HK91, G3, PTR Surplus German HK backplate that has been refinished and reparkerized.HKP-19692$34.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer
H&K Heckler & Koch
$9.95HK UMP Catch Release Lever Or Trip Lever For All UMP LowersHKP-01890$9.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Front Sight
H&K Heckler & Koch
$14.95New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin. This is a common wear or breakage part. Compatible with...HKP-00254$14.95 -
H&K UMP/USC (.45 ACP) HK Factory Cleaning Kit
H&K / HK Parts
$79.95Cleaning Kit For HK USC & UMP .45 ACP Subguns This Cleaning kit a genuine HK factory cleaning kit and is recommended by HK for all HK pistol owners. Includes: Saf-T-Clad cleaning rod Accessory adapter section #8-32 Patch holder Chamber face...HKP-01055$79.95 -
H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Ambidextrous Sling Loop
H&K Heckler & Koch
$40.95UMP, USC, SL8, & G36 Ambidextrous Sling Loop Or Eyebolt For Sling - German HK The addition of the HK eyelet creates a sling attachment point that will enable you to mount a sling using any of the hard mounting points located on the forearm of the...HKP-00611$40.95