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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HK91, G3 PTR ,Recoil Rod Assembly, Backplate - Painted
H&K Heckler & Koch
$54.95H&K HK91/G3 PTR & Recoil Rod Assembly-Backplate-Painted Our German HK backplate has been expertly refinished and Painted for exceptional durability. This backplate features an innovative guide screw that allows you to effortlessly replace worn...HKP-21647$54.95 -
HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
Nefarious Arms
$594.95Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 A1,...HKP-21589$594.95 -
On Sale
HK21, FMP Drum and Drum Hanger - 100 Round
H&K Heckler & Koch
Now: $997.95Was: $1,288.95HK Heckler and Koch HK21 and FMP Drum Hanger with 100 Round Drum Complete your HK21 or FMP21 build with the incredibly rare original H&K drum hanger and 100-round drum. These components have long been discontinued and are essential for...HKP-21509Now: $997.95Was: $1,288.95 -
B&T 1/2x28 Direct Thread to Hub Adapter
B&T Brugger & Thomet
$89.95B&T Direct Thread 1/2x28 Hub Adapter Convert any 1/2x28 RH threaded barrel to accept Hub devices with this direct fit adapter. Compatible With: HK MP5, MP5K, SP5, SP5K HK MR556 HK UMP 9mm B&T APC223, SPC223 B&T APC9K B&T GMH9...HKP-21506$89.95 -
On Sale
HK416 A5 Bolt Carrier - Complete
H&K Heckler & Koch
Now: $1,945.00Was: $2,349.95German H&K HK 416 A5 Bolt Carrier Complete Get your hands on that critical puzzle piece for your factory-correct 416A5 build. Fully assembled and ready to drop into your uper receiver. Bolt carriers may be marked ".223 Rem" or "5.56 x 45"...HKP-21500Now: $1,945.00Was: $2,349.95 -
HK416, MR223 Barrel - 5.56 / .223 - 14.5" - Threaded 1/2x28 - A5 Style
HKP HK Parts
$588.95H&K 416 A5 Converted Barrel - Threaded 1/2x28 These barrels began as standard A3 style but have been precisely machined with an A5-style relief cut to fit HK416 & MR223 A5 uppers. Now, you can have a drop-in barrel for your 416/MR223 A5 upper at...HKP-21449$588.95 -
On Sale
HK MP5K Stock with Direct Fit Adapter
Magpul
Now: $149.95Was: $199.95Magpul HK MP5K Stock with Direct Fit Adapter MP5K DT Magpul stock ready to drop in on any in-spec MP5K receiver or clone. We take our AR MP5K Adapter and attach it onto a mil-spec buffer tube. We then drop it on to the new Magpul DT Carbine stock. This...HKP-21412-MNow: $149.95Was: $199.95 -
Backup Sights - Picatinny
Strike Industries
$84.95Strike Industries 1913 Picatinny Backup Sights Features: Built-in backup sights when flipped down for quick target acquisition Low-profile and low snag design Toolless adjustments of windage and elevation Quick sliding dual aperture rear sight...HKP-21314$84.95 -
Gideon Shadow UMP Rear Sight, Complete
OMEGA
$39.95Omega Rear Sight Complete for HK UMP All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build. Will only work with Gideon Shadow. Locking screw will not work with a German UMP receiver, DEF...HKP-21266$39.95 -
HK SL8-1 Front Sight Complete
H&K Heckler & Koch
$79.95H&K HK SL8-1 Complete Front Sight Complete front sight, less the mounting hardware.HKP-16633$79.95 -
Out Of Stock
HK XM8 Sling - Black
H&K Heckler & Koch
$99.95H&K HK XM8 Sling - Black New HK German XM8 Tactical Sling. The real deal and a rare HK collectible. Only a few available.HKP-17669$99.95 -
HK G36 Single Optic Carrying Handle - Incomplete
$149.95HK G36 Single Optic Carrying Handle - Incomplete Stripped. The perfect for replacement of your well worn housing or broken housing. Just install your optic and you have a like new unit.HKP-16365$149.95