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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Out Of Stock
H&K Factory Hard Case
H&K Heckler & Koch
$0.00H&K Factory Hard Case H&K hard shell case. This is the perfect case that will guarantee to protect your most prized possessions. Only a few in stock so get them before they are all gone. Compatible With: MR762 MR556 USC SL8 rifles any rifle...HKP-20564$0.00 -
H&K HK 416/417 Buttstock Release Lever
H&K Heckler & Koch
$21.95HK 416 & 417 Buttstock Release LeverHKP-18948$21.95 -
HKP HK 416/MR556 7" M-LOK Quad Rail - Black
HKP HK Parts
$199.95HKP 7" M-LOK Quad Rail - Black Compatible With: HK 416 HK MR556HKP-17986$199.95 -
Magpul AR-15 ACS Stock - Mil-Spec
Magpul
$139.95Magpul AR-15 ACS Stock - Mil-Spec The patent-pending Magpul ACS (Adaptable Carbine/Storage) mil-spec model is a drop-in replacement butt-stock for AR15/M16 carbines using mil-spec-sized receiver extension tubes. Similar to the Magpul CTR, the ACS also...HKP-01134$139.95 -
Out Of Stock
Beta C-Mag 100 Round HK MR556/416 5.56/.223 Drum System
Beta C-Mag
$0.00100 Round Beta C-Mag For The HK416 & MR556 Firearms These drums are designed with clear back covers to enable you to see your round count. This works in any weapon system that takes the standard AR-15 magazines. This part is...HKP-02418$0.00 -
B&T 39mm Picatinny QD Skeleton Mount for Aimpoint T-Series
B&T Brugger & Thomet
$150.00B&T 39mm Picatinny QD Skeleton Mount for Aimpoint T-Series The B&T QD skeleton mount for Aimpoint T-Series offers a 39mm elevated profile for improved sight alignment, ideal for night vision setups requiring clearance over forward-mounted IR...HKP-21771$150.00 -
B&T 5.56 Rotex-SF Titanium HUB Adapter
B&T Brugger & Thomet
$275.00B&T 5.56 Rotex-SF Titanium HUB Adapter The B&T Rotex-SF HUB is a durable mounting system compatible with all 1.375x24TPI "HUB" suppressors. The HUB easily threads into compatible suppressors and can be secured with a spanner wrench or...HKP-21713$275.00 -
B&T Bipod (Polymer) - Picatinny Mount - Rubber Feet
B&T Brugger & Thomet
$145.00B&T Bipod (Polymer) - Picatinny Mount - Rubber Feet Genuine B&T bipod with NAR adapter (Picatinny mount) for use on any firearm featuring a Picatinny bottom rail.HKP-21773$145.00 -
B&T Flash Hider - 5.56mm NATO, 1/2x28
B&T Brugger & Thomet
$125.00B&T Flash Hider - 5.56mm NATO, 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles. Compatible With: HK 416/MR556/MR223 HK G36/SL8 B&T APC223 AR-15/M16 5.56/.223 firearms threaded 1/2x28HKP-21757$125.00 -
B&T QD Mount "Skeleton" for Aimpoint T Series 52mm
B&T Brugger & Thomet
$165.00B&T QD Mount "Skeleton" for Aimpoint T Series 52mm B&T universal Picatinny mount 52mm QD riser mount for the Aimpont T Series of optics. Quickly attach and detach your Aimpoint T Series optic with B&T's precision machined 52mm mount...HKP-21772$165.00 -
B&T Unigrip QD Mount w/ Bipod- Black
B&T Brugger & Thomet
$225.00B&T Unigrip QD Mount w/ Bipod- Black B&T universal Picatinny-mounted vertical grip and bipod combo. Get the best of both worlds with B&T's quick-detatch grip that converts the grip into a bipod for stable, longer shots...HKP-21774$225.00 -
Out Of Stock
H&K (5.56/.223) Factory Correct Flash Hider - Threaded 15x1 RH
H&K Heckler & Koch
$0.00H&K (5.56/.223) Factory Correct Flash Hider - Threaded 15x1 RH Fits all HK barrels. 15x1 The right-hand thread is the thread pitch. Perfect for the SL8 & G36 type conversions. Specifications: Threaded 15x1 RH Compatible With: HK 416/MR556 HK...HKP-00952$0.00 -
Out Of Stock
H&K 30 Round AR-15 5.56x45mm/.223 Magazine - Black
H&K Heckler & Koch
$0.0030 Round Magazine with Window - Black - Gen 3 - Heckler and Koch Factory German Heckler & Koch 30-round Gen3 polymer magazines, compatible with 5.56mm weapon systems: HK416 / MR223 / AR15 / M16 / M4 type rifles.HKP-19359$0.00 -
Out Of Stock
H&K 30 Round HK MR556/416/AR-15 5.56 Magazine - Black
H&K Heckler & Koch
$0.00Fits HK MR556A1, HK416, AR15 and all high quality AR/M4/M16 type firearms. Heckler & Koch reliability and durability in a 30 round 5.56 mm Polymer Magazine at a special price.Designed to provide optimal ammunition feeding for any M16/M4/AR15-type...HKP-15805$0.00 -
Out Of Stock
H&K HK 416 Collapsible Stock Mil Spec - RAL 7008
H&K Heckler & Koch
$0.00Collapsible HK 416 E1 Style Mil Spec - HK 416 RAL 7008 - Dark Earth Color Genuine Heckler & Koch HK416 surplus buttstocks in the RAL 7008 color scheme. HK-USA nows offers these surplus E1 Mil-Spec stocks which can be hard to find and are perfect for...HKP-19503$0.00 -
Out Of Stock
H&K HK 416 Complete Bolt Group
H&K Heckler & Koch
$0.00HK 416 Bolt Group Complete - German New HK German 416 Bolt group. Rare component as the HK bolt groups are now considered EUC items and are not for sale from HK Germany. Each unit is factory fresh with all of the OTB upgrades. Includes: HK 416 F/A...HKP-00043$0.00 -
Out Of Stock
H&K HK 416/MR556 Adaptive Battle Grip Panel Kit
H&K Heckler & Koch
$72.99H&K HK 416/MR556 Adaptive Battle Grip Panel Kit - Small & Large The standard HK adaptive battle grip comes fitted with medium sized removable grip panels. This adaptive battle grip kit supplies a full set of small and large interchangeable...HKP-21802$72.99 -
Out Of Stock
H&K HK MR556/416 H-Key Complete Short Handguard - Black
H&K Heckler & Koch
$0.00H&K HK MR556/416 H-Key Complete Short Handguard - Black Slim line handguard with H-Key mounting slots, short. Compatible With: All 11", 14.5", 16.5", & 20" models HK MR556 HK 416/416 A5HKP-18611$0.00 -
Out Of Stock
H&K HK MR556/416 H-Key Complete Short Handguard - FDE
H&K Heckler & Koch
$0.00H&K HK MR556/416 H-Key Complete Short Handguard - FDE Slim line handguard with H-Key mounting slots, short. Compatible With: All 11", 14.5", 16.5", & 20" models HK MR556 HK 416/416 A5HKP-18696$0.00 -
Out Of Stock
H&K HK MR556/416 Handguard Picatinny Profile - Black
H&K Heckler & Koch
$0.00H&K HK MR556/416 Handguard Picatinny Profile - Black Handguard with Picatinny profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. Comatible With: All 14.5", 16.5", & 20" models HK MR556 HK 416/416 A5HKP-18493$0.00 -
H&K HK MR556/416 Mag Locking Plate
H&K Heckler & Koch
$9.95HK German HK MR556 & HK 416 Magazine Locking PlateHKP-13484$9.95 -
Out Of Stock
H&K HK MR556/MR223 A5 Incomplete Upper Receiver - Black
H&K Heckler & Koch
$0.00HK German Un-Assembled/Stripped HK MR556/MR223 A5 Upper Receiver Factory HK MR556 A5 upper receiver. This is the semi-auto MR556 variant. Compatible With: HK MR556 HK MR223 HK 416*** Need a matching lower for your build? STS416 A5 LOWER -...HKP-18785$0.00 -
H&K HK MR556/MR762 Buttstock Release Lever
H&K Heckler & Koch
$9.95H&K HK MR556/MR762 Buttstock Release Lever Compatible With: HK MR556 HK MR762HKP-16621$9.95 -
H&K HK MR556/MR762 Fixed Tactical Sling Adapter
H&K Heckler & Koch
$129.95HK MR556 & MR762 Factory Sling Adapter - Fixed Factory HK German design & the finest design available & made to last. New HK manufactured part to allow the factory HK416, MR762 slings to fit & work on the MR556, MR762 as this adds...HKP-17553$129.95 -
Out Of Stock
H&K HK MR556/MR762/416 Buffer Staking Tool
H&K Heckler & Koch
$0.00HK 416, MR556 & MR762, HK 417 - Buffer Staking Tool - German HK Rare HK factory HK staking tool for the castle nut to be staked. These took over 3 years to get and offered for cost while supplies last! Each tool is the factory correct tool used for...HKP-16945$0.00 -
Out Of Stock
H&K HK416, MR556 Ejection Port Cover - FDE
H&K Heckler & Koch
$0.00HK German HK 416, MR556 Ejection Port Cover In RAL7008 -FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the project with the finest...HKP-19450$0.00 -
Out Of Stock
H&K MP5K, SP89, SP5K Single Point Sling
H&K Heckler & Koch
$0.00HK Factory German Single Point Sling This is the only HK factory single-point sling ever made or offered by HK. Each sling can be used in several applications and on several weapon systems, HK and non-HK alike. This attaches to one mounting point by way...HKP-00371$0.00 -
Out Of Stock
H&K MR556 & HK416 (5.56x45/.223) Upper Conversion Kit - Threaded 1/2x28
HKP HK Parts
$699.95H&K MR556 & HK416 (5.56x45/.223) Upper Conversion Kit - Threaded 1/2x28 Finally an answer for all of those that have been wanting a 14.5" upper for an HK416 or MR556. This conversion kit adds an upper or a barrel option for your MR556, CR556...HKP-17877$699.95 -
Out Of Stock
H&K MR556/416 Extended Windowed Handguard - RAL 8K
H&K Heckler & Koch
$0.00HK416A5, MR556 Extended Windowed Handguard - RAL 8000 HK German HK416A5 Extended forearm with window for use of the suppressed/non-suppressed gas block. This handguard is designed to minimize mirage and the utmost in performance. 14 7/8" long overall 1...HKP-17711$0.00 -
On Sale
HK 416 Bolt Hold Open Catch
USA
Now: $24.95Was: $39.95HK 416 Bolt Hold Open Catch US-made bolt hold open catch for the HK 416. Compatible With: HK 416 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99101Now: $24.95Was: $39.95 -
On Sale
HK 416 Sling Hook - USED
USA
Now: $9.95Was: $19.95HK 416 Sling Hook - USED Sling hook for the HK 416 Compatible With: HK 416 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99127Now: $9.95Was: $19.95 -
HK MR556 16" Complete Upper Barrel
H&K Heckler & Koch
$989.95HK MR556 16" Complete Upper Barrel Factory HK MR556 16" barrel, complete with a factory-installed barrel nut, gas block and flash hider. Every component is brand new and meticulously crafted, guaranteeing top-notch quality. This barrel is the ultimate...HKP-21805$989.95 -
On Sale
HK MR556/416 Barrel Bundle - Gunsmith Special
USA
Now: $435.95Was: $649.95HK MR556/416 Barrel Bundle - Gunsmith Special A selection of barrels offered as a special for gunsmiths. Will require work before being functional. We recommend the work be performed by a professional gunsmith. Includes: 3 11" barrels 2 8" barrels THIS...HKP-99084Now: $435.95Was: $649.95 -
On Sale
HKP 416 10.4" 5.56 Complete Upper Receiver Assembly - BLEMISHED
HKP HK Parts
Now: $1,859.95Was: $2,485.95HKP 416 10.4" 5.56 Complete Upper Receiver Assembly - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each kit includes the complete upper assembly and...HKP-17662-BNow: $1,859.95Was: $2,485.95 -
Out Of Stock
HKP HK 416 A5 Style Trigger Guard - MR556/416/MR762/417 - RAL 8K
HKP HK Parts
$39.95HKP HK 416 A5 Style Trigger Guard - MR556/416/MR762/417 - RAL 8K Compatible With: MR556 & 416 MR762 & 417HKP-17832$39.95 -
Out Of Stock
HKP HK G3K/33K (5.56/.223) & (7.62x51/.308) Extended 4 Prong Flash Hider - Threaded 15x1 RH
HKP HK Parts
$79.95HKP HK G3K/33K (5.56/.223) & (7.62x51/.308) Extended 4 Prong Flash Hider - Threaded 15x1 RH This fits any threaded 15x1 RH HK barrel. The overall length is 4.37 inches. These are the perfect length of the G3K and HK33K style builds as they will yield...HKP-00501$79.95 -
Out Of Stock
HKP HK MR556/416 9" HK416C Style Barrel Conversion Kit
HKP HK Parts
$0.00MR556 & HK416 Barrel Conversion Kit - 9" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...HKP-18401$0.00 -
Out Of Stock
HKP HK MR556/416 DMR Extended 15" M-LOK Handguard - Black
HKP HK Parts
$249.95HK MR556 & HK416 Extended DMR 15" Handguard - M-LOK A drop on replacement forearm for the HK MR556 and HK 416. A perfect upgrade for your HK rifle. This rail also provides an additional 6" of rail length for more flexibility and great control.HKP-18019$249.95 -
Out Of Stock
HKP HK MR556/416 DMR Extended 15" Quad Rail - Black
HKP HK Parts
$259.95HK MR556 & HK416 DMR Length 15" Quad Rail - ExtendedHKP-18018$259.95 -
Out Of Stock
HKP HK MR556/416 Titanium Firing Pin Catch
HKP HK Parts
$49.95HK MR556 & HK416 Firing Pin - TitaniumGrade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR556 & HK 416 weapon system. Get the...HKP-17767$49.95