HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK 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, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK SP5K 9mm Housing - SEF, Navy Style - Clipped & Pinned
H&K Heckler & Koch
$199.95HK German SP5K Spec - Navy Style - SEF C/P Housing HK SP5K Spec ONLY for the newly released HK SP5K spec. Made is Germany and machined to fit the HK SP5K spec only. Compatible With: HK SP5K 9mm Spec For use with an SEF style trigger pack not the...HKP-17945$199.95 -
On Sale
HK MP5, SP5 3 Lug Adapter - Threaded 1/2x32
HKP HK Parts
Now: $29.95Was: $49.95HKP 3-Lug Adapter - Threaded 1/2x32 The HK 3-Lug Adapter, internally threaded with 1/2x32 threads, can easily attach to any existing 1/2x32 threaded parts. This is the finest machined adapter on the market, made in the USA to exact HK German 3-lug...HKP-00107Now: $29.95Was: $49.95 -
Out Of Stock
HK MP5, MP5K Extractor - Enhanced Coated Polish
HKP HK Parts
$44.95HKP HK MP5/MP5K Extractor - Enhanced Coated Polish Built for dependable performance, this polished and coated extractor delivers smooth cycling and consistent extraction. A great choice for both upgrades and routine replacements. Compatible...HKP-22181-M$44.95 -
HK91, G3 Locking Piece - Used
H&K Heckler & Koch
$14.95H&K HK G3, HK 91 Locking Piece - Used HK German Locking Piece For HK G3 & HK 91- USEDThis is the factory correct 45 degree locking piece for HK 91/G3 firearms. Used pulled from demilled firearms and will range in condition but perfectly usable.HKP-16712$14.95 -
HK G36 Magwell
H&K Heckler & Koch
$79.95H&K HK G36 Magwell - Black Factory German G36 magwell. Great for a replacement component or a critical piece of the puzzle when converting an SL8 to a G36. Compatible with factory HK and Magpul G36 magazines alike. Compatible With: HK...HKP-00625$79.95 -
HK416, MR556 Flash Hider - 3-Prong - 1/2x28
Surefire
$168.95Surefire (5.56/.223) 3-Prong Flash Hider - Threaded 1/2x28 The flash hider is engineered for M4/M16 and variants with 1/2x28 muzzle threads. Its patent-pending design reduces muzzle flash by over 99% compared to a plain muzzle. Built from US...HKP-17261$168.95 -
HK MR556/CR556/MR762 H-Key 8 Rail Segment
HKP HK Parts
$29.95HK MR556, CR556 & MR762 HKey Rail Segment - 8 Slot 8 slot picatinny rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being shipped on the MR556, CR556, MR762 and...HKP-17844$29.95 -
HK G36, SL8, UMP, USC Sling Loop - Ambidextrous
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 -
Out Of Stock
HK53, HK51 Handguard - Full Length
H&K Heckler & Koch
$59.95H&K HK53/HK51 Handguard - Full Length H&K German manufactured HK51 and HK53 polymer handguard. This handguard is the proper length to cover the extended portion of the trunnion found on the HK53 and HK51 style of firearms. Compatible...HKP-00468$59.95 -
HK MP5 Magazine Spring - 10mm and .40 S&W - 30 Round
H&K Heckler & Koch
$9.95H&K MP5 40/10 30 Round Magazine Spring New HK German MP5 40/10 magazine spring for the 30 round magazine. Hard to find and a must have repair and replacement item.HKP-01056$9.95 -
HK MP5, SP5K Extractor - 9mm
MKE
$19.95MKE HK MP5/K 9mm Extractor Keep your MP5 or MP5K running strong with this MKE 9mm extractor. Perfect for replacing a worn part or completing a build, it’s made to HK specs for smooth, reliable performance you can count on. Compatible With: HK MP5,...HKP-21919$19.95 -
HK MP5K 2-Stage Trigger Group - 9mm - Complete
Timney Triggers
$498.95Timney Trigger for MP5K, SP5K The SEF Timney trigger group comes completely assembled, ready to drop into your receiver. Features a 3rd generation German ejector lever, new SEF selector lever, and a brand new factory German housing. Available exclusively...HKP-20515-M$498.95