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
HK MR556, MR223 Upper Receiver w/ F/A & Ejection Door
H&K Heckler & Koch
Now: $625.46Was: $694.95New HK German Partially Pre-Assembled MR556/MR223 Upper Receiver Each unit comes just as shown with the F/A (forward assist) assembly and ejection port door assembly installed from the HK factory. Compatible With: HK MR556 HK MR223 HK...Now: $625.46Was: $694.95 -
Out Of StockOn Sale
HK416, MR556 14.5" Super Modular Rail System - FDE
Geissele
Now: $494.96Was: $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"...Now: $494.96Was: $549.95 -
On Sale
HK 5.56 Magazine Assist - 3 Pack
Magpul
Now: $8.96Was: $9.95ORIGINAL MAGPUL® 5.56 NATO, 3 PACK When installed on the base of a 5.56x45 rifle magazine, the original Magpul provides improved speed and control during high stress, tactical magazine changes. Durable synthetic rubber loop with recessed rough...Now: $8.96Was: $9.95 -
On Sale
HK G36, SL8 Cocking Handle
H&K Heckler & Koch
Now: $50.36Was: $55.95HK Cocking Handle For G36 & SL8 Bolt CarriersNow: $50.36Was: $55.95 -
On Sale
HK UMP Firing Pin Retainer Pin - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
Now: $7.16Was: $7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower. Compatible With: HK UMPNow: $7.16Was: $7.95 -
On Sale
HK Cocking Tube Extrusion - 12" Section
H&K Heckler & Koch
Now: $49.46Was: $54.95H&K Factory Cocking Tube Extrusion 12" Section HK cocking tube section is perfect for custom HK cocking tube projects. Overall length is 12" long. All steel and ready for that custom project or custom build. Perfect for custom cocking tube...Now: $49.46Was: $54.95 -
On Sale
HK91, G3, PTR Magazine - 5 Round
HKP HK Parts
Now: $63.96Was: $79.95HKP HK 91/G3/MSG90 5 Round Magazine - Steel - (7.62x51/.308) 5 Round German Steel 308 Magazine With US Made Floorplate (Counts as 1 US made Part for 922R compliance) For HK Rifles.This magazine is made by Heckler and Koch & converted to five rounds...Now: $63.96Was: $79.95 -
On Sale
HK MP5, HK94, SP5 Trigger Pack - Flat Trigger - 9mm - 4 US Made 922r Parts
HKP HK Parts
Now: $239.96Was: $299.95HKP Zenith 9mm US Made Trigger Pack With Flat Trigger Semi auto trigger pack complete with flat trigger installed. Completely assembled & ready to drop in. The remaining parts are all German HK Or US made parts to make up the rest of the...Now: $239.96Was: $299.95 -
On Sale
HK MP5 Barrel - 9mm - 8.85" - 3 Lug
RCM
Now: $134.95Was: $149.95RCM HK MP5 9mm Barrel - Non-Threaded 3-Lug Made from Cold Hammer Forged (CHF) steel, each high-quality barrel is processed with a durable nitride finish, similar to the treatment used by Sig Sauer. Precision-milled to the latest specifications with...Now: $134.95Was: $149.95 -
On Sale
M-LOK Sling Swivel Mount - Quick Detach
AIM
Now: $22.49Was: $24.99M-LOK Quick Detach Sling Swivel Mount The Aim M-LOK® QD Sling Mount stud with QD swivel provides a front attachment point for your push button QD sling or sling with just strap. Includes: All necessary mounting hardware and wrenches Features: High...Now: $22.49Was: $24.99 -
On Sale
HK416, MR556, HK417, MR762 Rear Sight - Flip Up 2mm - FDE
H&K Heckler & Koch
Now: $402.25Was: $446.95H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE Attaches to any standard picatinny rail. No hardware needed as this is a self contained quick attach rear sight assembly. This unique HK designed sight features a quick & easy push button...Now: $402.25Was: $446.95 -
On Sale
HK MP5 Barrel Retaining Pin - 5.015mm
H&K Heckler & Koch
Now: $13.46Was: $14.95H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel. Compatible With: HK MP5, SP5, MP5K,...Now: $13.46Was: $14.95