HK MR556/416 Series
Our extensive collection boasts a wide array of HK MR556 and HK 416 parts, including precision HK MR556 Barrels and durable HK 416 Stocks. Elevate your rifle's functionality with HK 416 Handguards and HK MR556 Triggers, designed for the discerning shooter seeking top-tier performance.
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On Sale
JMAC HK MP5 9mm Muzzle Device - Compatible With KeyMo Suppressors - Threaded 1/2x28
JMAC Customs
Now: $77.95Was: $99.95JMAC HK MP5 9mm Muzzle Device - Compatible With KeyMo Suppressors - Threaded 1/2x28 management and a 10mm bore to reduce flash and concussion. Its no-timing design allows for easy installation without shims or crush washers. Compatible with KeyMount and...HKP-21256Now: $77.95Was: $99.95 -
Out Of Stock
Nefarious Arms - NAS HK 416 Adjustable Gas Block
Nefarious Arms
$549.95Nefarious Arms - NAS HK 416 Adjustable Gas Block This is a user configurable 2 position adjustable gas block that can be installed on 11″ – 20″ A1 barrels. Each gas block ships with 5 vent screws, a screwdriver, anti-seize and detailed...HKP-21040$549.95 -
Out Of Stock
Strike Industries M-LOK Bikini Hand Stop
Strike Industries
$13.95Bikini Hand Stop (2-pack) Strike Industries The Strike Industries Bikini Hand Stop (BHS) gives the shooter increased ergonomics and control of the weapon. The hand stop is made from durable and lightweight polymer compatible with M-LOK rails. The BHS is...HKP-20057$13.95 -
H&K Leather Sling - Used
H&K Heckler & Koch
$49.95Original Surplus German HK Leather 2 point sling Comes with HK sling hook. Pulled from German military G3 rifles. Complete and in excellent shape overall. Made with leather straps and steel hardware and HK sling hook. Compatible With: HK91 G3 ...HKP-16316$49.95 -
Strike Industries Link Anchor Poly Handstop
Strike Industries
$19.95Strike Industries Link Anchor Poly Handstop The LINK Anchor Handstop is made from a heat-resistant polymer that allows comfortable grip in any shooting condition. It has a low profile design that allows mounting through any MLOK or KeyMod openings. The...HKP-19645$19.95 -
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 -
H&K HK MR556 Incomplete Upper Receiver
H&K Heckler & Koch
$399.95HK German Stripped HK MR556 Upper Receiver New factory German incomplete and unmarked MR556 upper receiver. Compatible With: HK MR556 HK MR223 HK 416 Do you need a matching lower for your build? STS416 A5 LOWER - Specialized Tactical...HKP-02615$399.95 -
Trijicon RMR/SRO Low Picatinny Rail Mount
Trijicon
$94.95Trijicon Low Picatinny Rail Mount for RMR/SRO - RM33 Low Picatinny rail mount for RMR/SRO. Includes: Mount Optic mounting screws Distance From Top of Mounting Rail to Optical Axis: RMR: 0.768" SRO: 1.009" Slimline mounts, fits Picatinny railHKP-20335$94.95 -
H&K HK MR556//MR762/416 Bolt Catch Plunger
H&K Heckler & Koch
$9.95HK MR556 & HK 416 Bolt Catch Plunger Compatible With: HK MR556 HK 416 HK MR762HKP-02655$9.95 -
HKP Single Point Sling - Quick Detach - Tan
NcSTAR
$29.95HKP Single Point Sling in Tan - Quick Detach Specifications: Style: bungee-type design for positive retention and control Connection: HK sling hook attachment point with elastic cover Heavy duty 1.5" wide adjustable nylon webbing and elastic bungee...HKP-19766$29.95 -
H&K HK MR556/416 Castle Nut
H&K Heckler & Koch
$35.95H&K HK MR556/416 Castle Nut For Buffer Tube New HK German manufacture. This buffer tube castle nut will fit both mil-spec and commercial buffer tubes. All steel manufacture. With HK round tool attachment points as well as traditional wrench...HKP-15230$35.95 -
Out Of Stock
H&K HK MR556/MR762/416/417 Magazine Catch Spring
H&K Heckler & Koch
$9.95HK MR556, HK 416 & MR762 & 417 Magazine Catch Spring HK German manufacture. Compatible With: HK MR556 HK 416, M27 HK MR762 HK 417, G28 AR15, M4 & M16 firearmsHKP-02620$9.95 -
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 -
Out Of Stock
H&K HK MP5, HK 416, GSG5 .22LR Sling - Black
H&K Heckler & Koch
$0.00HK 416, HK MP5 & GSG5 .22LR Sling This is a factory HK-manufactured sling perfect for HK weapons systems, including .22LR models. Each unit comes with 2 HK German sling hooks or ambi use, as well as a quick detach buckle. This part is fully...HKP-00893$0.00 -
H&K HK MR556/MR762/416/417 V1 Battle Grip - Black
H&K Heckler & Koch
$79.95H&K 416/417 & MR556/762 V1 Battle Grip - Black This is a great upgrade for any AR15, M16/416 platform. New factory German HK manufacture. Compatible With: HK 416/MR556 HK 417/MR762 HK M27 HK G28 AR-15, M4, & M16 PlatformsHKP-01023$79.95 -
On Sale
HKP HK MR556/416 Dual Magazine Clamp
HKP HK Parts
Now: $29.95Was: $49.95HKP HK MR556/416 Dual Magazine Clamp Securely hold two HK Maritime 416 magazines together for fast mag swaps. Precision-machined from billet aluminum and cerakoted in the popular RAL8000 or classic black, our dual mag clamp is a must for those...HKP-21553-MNow: $29.95Was: $49.95 -
Ergo Picatinny Rail Hand Stop
Ergo
$11.95Ergo Picatinny Rail Hand Stop Compatible with all Picatinny rails and adds a positive stop. Useful on short-barrel rifles and shotguns and can act as a hand-positioning device.HKP-14527$11.95 -
HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant
HKP HK Parts
$24.95HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant This muzzle device is a partially milled version (not completely milled) of the factory HK birdcage style flash hider found on the factory-correct HK models of rifles...HKP-12746$24.95 -
H&K HK MR556/416 Bolt Catch
H&K Heckler & Koch
$69.95HK MR556 & 416 Bolt Catch New HK German manufacture. Compatible With: HK 416 HK MR556HKP-02542$69.95 -
B&T HK 416/MR556 Angled Foregrip / Hand Stop with NAR Interface
B&T Brugger & Thomet
$74.95B&T Angled Foregrip / Hand Stop with NAR Interface A perfect solution for shooters who prefer an angled foregrip. The lugs at the end of the grip assure a firm rest for the supporting hand. The grip can be mounted easily onto any NAR/Picatinny rail...HKP-21416$74.95 -
Out Of Stock
H&K HK /MR556416 A5 Ambidextrous Complete Selector Lever Set - RAL 8K
H&K Heckler & Koch
$179.95HK 416A5 SEMI & MR556 Ambidextrous Selector Lever Set Complete - RAL 8000 New HK German manufacture. Complete kit to upgrade the selector lever set on the MR556 to the newer HK 416A5 semi style of levers. A drop in upgrade for the MR556 & CR556...HKP-17603$179.95 -
Out Of Stock
H&K HK 416 Battle Grip With Tools - RAL 8K
H&K Heckler & Koch
$159.95H&K 416/417 & MR556/762 Battle Grip With Tools - RAL 8000 HK German battle grip with HK tools stowed in the grip's storage compartment. Finish your HK build with our favorite grip or upgrade your AR-15 platform. Compatible With: HK...HKP-21462$159.95 -
H&K HK MR556/416 Magazine Catch
H&K Heckler & Koch
$49.95H&K HK MR556/416 Magazine Catch New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms. Compatible With: HK MR556 HK 416HKP-15458$49.95 -
Out Of Stock
H&K HK MR556/CR556 Complete Bolt Group
H&K Heckler & Koch
$684.95H&K HK MR556/CR556 Complete Bolt Group Bolt carriers will be marked ".223 Rem" or "5.56 x 45". Includes The Following HK German Factory Parts: MR556 Bolt Carrier Bolt head complete Firing pin spring Firing pin Cam pin All misc parts that comprise a...HKP-02618$684.95 -
HK German Leather Sling
H&K Heckler & Koch
$99.95German HK Leather 2 point sling - New Comes with HK sling hook. Complete and new condition. Made with leather straps and steel hardware and HK sling hook. Compatible With: HK91 G3 PTR91 & CETMEHK93 33 53HK94 MP5HK clones or other custom...HKP-20485$99.95 -
On Sale
Magpul AR-15 CTR 6 Position Stock- Commercial
Magpul
Now: $44.95Was: $79.95Magpul AR-15 CTR 6 Position Stock - Commercial Spec The Magpul CTR (Compact/Type Restricted) Commercial-Spec Model is a drop-in replacement buttstock for AR15/M16 carbines using mil-spec-sized receiver extension tubes. The streamlined A-frame...HKP-02375Now: $44.95Was: $79.95 -
GSG German Sports Guns Flip Front & Rear Sight Set Complete
GSG German Sports Guns
$179.95GSG German Sports Guns Flip Front & Rear Sight Set Complete New MP7A1 style flip up front & rear sight set. Includes iron sights (folded down) for low profile sighting system and can also be deployed in the flipped up position for longer distance...HKP-18772$179.95 -
H&K HK MR556/416 Magazine Release Button
H&K Heckler & Koch
$16.95H&K HK MR556/416 Magazine Release Button New HK German Manufacture. Compatible With: HK MR556 HK416 AR15, M4 & M16 firearmsHKP-02656$16.95 -
Out Of Stock
H&K HK MR556/416 Upper Receiver Threaded Piston Guide
H&K Heckler & Koch
$19.95HK MR556 & 416 Upper Receiver Threaded Piston Guide Compatible With: HK MR556 HK 416 HK M27HKP-02640$19.95 -
Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston
Nefarious Arms
$64.95Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated gold for added protection and an overall great part. Compatible...HKP-21364$64.95 -
Geissele HK MR556 Trigger
Geissele
$489.95Geissele HK MR556 Trigger The HK MR556 trigger is similar to Geissele's SSA with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK 416's. Each Trigger comes with full installation instructions and the lubricant you will need for...HKP-16464$489.95 -
HKP HK 416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
B&T Quick Detach Polymer Unigrip - Black
B&T Brugger & Thomet
$99.95B&T Quick Detach Polymer Unigrip This simple foregrip is designed to be mounted on the NAR/Picatinny rail of the firearm. The grip features an integrated storage compartment. Specifications: Color: Black Length: 5" (130mm) Weight: 113g Material:...HKP-18102$99.95 -
Out Of Stock
H&K HK 416/MR556 Quad Rail
H&K Heckler & Koch
$419.95H&K HK 416/MR556 Quad Rail HK German 416, MR556 Quad Rail without mounting screw. Specifications: Length: 9 1/4" Color: Charcoal gray Compatible With: HK MR556 HK 416HKP-16858$419.95 -
Out Of Stock
H&K HK MR556/416 Commercial Factory E1 Rear Stock - Black
H&K Heckler & Koch
$249.95H&K HK MR556/416 Commercial Factory E1 Rear Stock - Black HK 416 factory German E1 Rear Stock latest HK German stock for all HK 416/MR556 rifles. This HK 416 HKE1 Buttstock fits Commercial buffer tubes (receiver extensions) for M4/AR15 type weapons...HKP-15426$249.95 -
H&K HK MR556/416 Battle Grip Storage Cap Pin
H&K Heckler & Koch
$4.95H&K HK MR556/416 Battle Grip Storage Cap PinHKP-16861$4.95 -
Out Of Stock
H&K HK MR556/762/416/417 Bolt Catch Spring
H&K Heckler & Koch
$5.99H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16661$5.99 -
H&K HK MR556/MR762/416 Forward Assist Assembly
H&K Heckler & Koch
$68.95H&K HK MR556/MR762/416 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK MR556 HK 416 HK MR762HKP-16528$68.95 -
H&K HK 416/417/MR556/MR762 Magazine Catch Retainer Ring Pin
H&K Heckler & Koch
$8.95H&K HK 416/417/MR556/MR762 Magazine Catch Retainer Ring Pin Compatible With: HK 416 HK 417 MR556 MR762HKP-16618$8.95 -
Surefire (5.56/.223) 3-Prong Flash Hider - Threaded 1/2x28
Surefire
$174.95Surefire (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$174.95