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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On Sale
Picatinny Optic Rail - Claw Adapter
UTG PRO
Now: $13.46Was: $14.95HK Claw Mount To Picatinny Style Rail This part allows all STANAG style scopes to accept the universal Picatinny style rail. Each rail adapter comes with rail and mounting hardware. This part adds 6 1/8 inches of rail space to the top of your claw mount...Now: $13.46Was: $14.95 -
On Sale
HK MP5, MP5K Front Sight Tower Assembly
HKP HK Parts
Now: $43.96Was: $54.95HKP MP5, MP5K Front Sight Tower Assembly New US made from a solid billet of ordnance grade steel. Each front sight tower, triple frame set comes complete with a new HK diopter style replaceable front sight post & roll pin. This is the complete set...Now: $43.96Was: $54.95 -
HK91, G3 Cocking Handle - Black Rubberized - Surplus
H&K Heckler & Koch
$24.95HK German HK G3 & HK 91 Rubberized Cocking Handle- Black Used German military surplus from G3 Military rifles. Last remaining units we have on hand. Each comes complete, black in color. Date coded. Made by HK for the German military. Compatible...$24.95 -
On Sale
HK MP5K, SP5K Stock or Brace Adapter - Picatinny Rail
HKP HK Parts
Now: $103.96Was: $129.95HKP HK MP5K/SP5K/SP89 Picatinny Rail Brace/Stock Adapter Our rail stock adapter allows you to attach any 1913 Style Stock, Brace to your MP5K.The 1913 style stocks & braces lock in place and provide a better Cheek Weld than many traditional stock...Now: $103.96Was: $129.95 -
On Sale
HK UMP 2 Position Lower - Safe, Semi - 9mm, .40 S&W, .45 ACP
HKP HK Parts
Now: $396.79Was: $495.99New HK Parts -UMP Safe, Semi FBI (0,1) Lower Each lower comes complete with 2 position settings (S, F) and all the internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Compatible With: UMP .45 UMP .40 UMP 9mm USC...Now: $396.79Was: $495.99 -
On Sale
HK91, G3 Magazine - 20 Round - 7.62x51/.308
Thermold
Now: $17.95Was: $19.95Thermold HK91, G3 Magazine - 20 Round - 7.62x51/.308 - US Made This US-made magazine is made of space-age polymer. Also, it counts as three US-made compliance parts. Each magazine features a fail-safe follower non-corrosive (polymer magazine body)...Now: $17.95Was: $19.95 -
Out Of StockOn Sale
HK 416, R556 Castle Nut - A5 Style - Extended
HKP HK Parts
Now: $31.96Was: $39.95HK 416, MR556 A5 Style Extended Length Castle Nut Unlike the factory German A5 castle, our A5 extended buffer tube castle nut is compatible with both mil-spec & commercial buffer tubes. Crafted from ordnance grade steel and nitrided for a...Now: $31.96Was: $39.95 -
Out Of StockOn Sale
HK Picatinny Rail For HK Receivers - 15 Slot
HKP HK Parts
Now: $47.96Was: $59.95HKP Picatinny Rail For HK Receivers - 15 Slot Mil-Spec all steel CNC'ed picatinny rail in the white, relief cut to fit flush and low profile on HK receivers. The most solid and consistent mounting platform made for mounting scopes and optics to HK builds...Now: $47.96Was: $59.95 -
On Sale
HK MP5 Magazine - 30 Round, 9mm
Zenith
Now: $44.06Was: $48.95Zenith 30 Round HK MP5 Magazine Features: Cerakote finish - Many colors to choose from All steel construction Round count indicator holes on the rear of the magazine Stainless steel follower Reinforced feed lips High-tensile compression...Now: $44.06Was: $48.95 -
On Sale
HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1
RCM
Now: $179.95Was: $199.95RCM HK MP5SD 9mm Barrel - Threaded 18x1 RCM HK Style MP5 SD Barrel. Specifications: Made In The USA Cold Hammer Forged Steel (CHF) 16 Fluted Chamber Threaded 18x1 Overall Length 5.74" Nitride Finish To Entire Surface Of Barrel Inside &...Now: $179.95Was: $199.95 -
On Sale
HK MP5 .22 Sling Clip Kit
HKP HK Parts
Now: $19.96Was: $24.95HKP HK MP5 .22 Sling Clip Kit Each unit will fit all models of the MP5 .22 that have the 3 mounting holes on the left side of the magwell. This item installs in a few mins and comes complete with all you need for the install. With the addition of this...Now: $19.96Was: $24.95 -
On Sale
HK416, MR556 Magazine - 10 Round
H&K Heckler & Koch
Now: $67.45Was: $74.95HK416 & MR556 Factory - 10 Round Steel Maritime Coated Magazine Compatible with AR-15 & M16 firearms. All steel & stainless construction, maritime coated & made to last a lifetime. Compatible With: HK MR556 HK 416 HK...Now: $67.45Was: $74.95