HK MR556/416 Small Parts
Our selection includes every essential small part for your HK MR556 or HK416 rifle – pins, springs, detents, gas rings, firing pins, and more.
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H&K HK MR556/MR762/416/417 Firing Pin Spring
H&K Heckler & Koch
$14.95HK MR556, MR762 Firing Pin Spring - German This part is great to have on hand as this item is a high wear and replacement part and one of the most common breakage parts on the HK 416/MR556 rifles. Compatible with: HK MR556 HK MR762 HK 416 HK 417 HK...HKP-00928$14.95 -
Magpul M-Lok MVG Vertical Grip
Magpul
$22.95M-LOK? MVG® VERTICAL GRIP M-LOK SLOT SYSTEMThe M-LOK MVG is a light weight, inexpensive vertical foregrip that attaches directly to M-LOK compatible hand guards and forends with no additional Picatinny rails required. Made from the same high quality...HKP-17321$22.95 -
Magpul M-Lok 3 Slots Rail Section
Magpul
$18.95Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...HKP-20495$18.95 -
Magpul M-Lok 5 Slot Rail Section
Magpul
$18.95Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...HKP-19568$18.95 -
Barrel Nut - HK 416, MR556 - Stainless Steel
$39.95HK MR556, HK 416 Barrel Nut or Socket For Barrel - Stainless Steel A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in the removal and installation processes. Made in...HKP-17334$39.95 -
H&K HK MR556/416 Clamping Sleeve Safety Lever
H&K Heckler & Koch
$7.95HK German HK 416, MR556 Clamping Sleeve For Safety Levers. There are one of the same pin on both sides.HKP-15252$7.95 -
H&K HK MR556/416 Firing Pin
H&K Heckler & Koch
$54.95H&K HK MR556/416 Firing Pin New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems. Compatible with: HK MR556 HK 416 HK CR556 HK...HKP-00045$54.95 -
H&K HK416 A5 Factory German Extended Castle Nut
H&K Heckler & Koch
$49.95Original HK Factory German steel 416 A5 Extended Castle Nut. Perfect for MR556, HK 416 A5 builds, or upgrades.HKP-19164$49.95 -
H&K HK 416 Enhanced Firing Pin/Retaining Pin
H&K Heckler & Koch
$19.95HK 416, Firing Pin Retaining Pin- New StyleThis pin is a common wear and replacement item on any AR-15 or M16 system as well as the HK416. Not needed on the MR556 models. This is the newer style pin that is goldish in color, super hardened and much less...HKP-02658$19.95 -
H&K HK 416 Full Auto Ambidextrous 3-Position Selector Lever Kit
H&K Heckler & Koch
$0.00HK416 Full Auto Ambi Selectors Kit - German HKEach set comes complete with everything you will need to upgrade your HK 416 to an ambi selector lever set up. Factory correct German HK and all steel construction.Each factory HK German Kit Includes: 2 X...HKP-17552$0.00 -
H&K HK MR556/416 Right or Left Side Safety Selector
H&K Heckler & Koch
$24.95HK German MR 556 & HK 416 Safety Lever- Right Or Left Side: HK German manufactured right or left side selector lever for the ambidextrous controls of the HK 416, MR556 family of firearms. Will work for both semi and select fire models. Each set will...HKP-15250$24.95 -
Strike Industries M-LOK Bikini Hand Stop
Strike Industries
$13.95Bikini Hand Stop (2-pack) Strike IndustriesThe 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 -
Out Of Stock
H&K HK MR556/HK416 FFRS Retaining Spring
H&K Heckler & Koch
$0.00The Retainer Spring Retains The Hanguard Locking Pin on the Free Floating Rail System (FFRS). These can easily become damaged with removal of the handguard screws. Once the spring is damaged they have to be replaced and cannot easily be made to work...HKP-02617$0.00 -
H&K HK416 Full Auto Ambi Selector Lever Kit - 3 Position Polymer Selectors
H&K Heckler & Koch
$159.95HK416 Full Auto Ambi Selectors Kit - German HK - 3 PositionEach set comes complete with everything you will need to upgrade your HK 416 to an ambi selector lever set up. The HK 416A5 polymer selector levers will be helpful for a quick visual indication...HKP-20398$159.95 -
H&K HK MR556/416 Battle Grip Storage Cap Pin
H&K Heckler & Koch
$4.95HK German HK416, MR556 Battle Grip Storage Cap Roll Pin.HKP-16861$4.95 -
Magpul M-Lok 7 Slot Rail Section
Magpul
$21.95Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum,...HKP-19569$21.95 -
H&K HK MR556/416 Bolt Catch Pin
H&K Heckler & Koch
$4.95HK MR556 & HK 416 Bolt Catch PinThe factory roll pin to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance.HKP-02677$4.95 -
Out Of Stock
H&K HK MR556/416 Fire Control Detent Stop Pin
H&K Heckler & Koch
$16.95HK German HK 416, MR556 Fire Control Detent Stop PinHKP-15272$16.95 -
Out Of Stock
H&K HK MR556/MR762/416/417 Magazine Catch Retainer Ring Pin
H&K Heckler & Koch
$0.00Magazine Catch Retainer Ring Pin.Compatible with: HK 416 MR556 HK 417 MR762HKP-16618$0.00 -
H&K HK MR556/416 Extractor Axle Pin
H&K Heckler & Koch
$11.95HK MR556/416 Extractor Axle Pin This factory HK German part holds the extractor in place on the bolt head. This item needs to be changed each time it is removed per HK. Compatible With: HK 416 MR556 M27 HK 416 A5HKP-00040$11.95 -
Strike Industries M-Lok & KeyMod Universal 7 Slot Rail Section - Red
Strike Industries
$25.95Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-Lok and came up with the ultimate solution, a dual interface design compatible with both M-Lok and Key-Mod, same hardware with no need for additional parts. This Aluminum...HKP-19188$25.95 -
H&K HK MR556/416 Forward Assist Pin
H&K Heckler & Koch
$4.95Forward Assist Pin For MR556 & HK416 PinHKP-02662$4.95 -
HKP HK MR556/416 SS Firing Pin
HKP HK Parts
$29.95Firing Pin For HK 416 & MR556 Firearm - USANew US made HK 416 & MR556 stainless steel firing pin. Made from hardened stainless steel and come new in the white. HK416 HK MR556 HK CR556 HK M27HKP-01756$29.95 -
H&K HK MR556/416 Bolt Carrier
H&K Heckler & Koch
$397.95German HK marked MR556 & HK 416 factory bolt carrier with the newer style bolt retaining key. This is the factory one-piece carrier that has the out of battery disconnect and the bolt retaining latch assemblies installed to make up the HK MR556 (556...HKP-02718$397.95 -
H&K HK MR556/416 Front Sight Roll Pin
H&K Heckler & Koch
$4.95HK MR556 & HK416, MR762 & HK417 Front Sight Blade Roll Pin For Diopter Sight.HKP-02659$4.95 -
H&K HK MR556/416 Threaded Pin for Buttstock Insert
H&K Heckler & Koch
$4.95HK MR556, HK416 Threaded Pin For E1/E2 buttstock Release Lever InsertNew HK German manufactured E1/E2 stock release and tightening screw that takes the slack and slop out of the stock when in desired position. HK MR556 HK 416HKP-16604$4.95 -
HK G36, HK SL8, HK 416, HK MR556 Gas Piston - Black
USA
$79.95HK G36, HK SL8, HK 416, HK MR556 Gas Piston - Black Complete assembly with 3X rings installed and nitrided black in color. Counts as one US made compliant part for your SL8 - G36 style conversion. This is one of the best parts to use on the conversion as...HKP-14540$79.95 -
Franklin Armory BFSIII AR-C1
FA Franklin Armory
$386.99The Binary Firing System GEN 3 (BFSIII) is a 3-position trigger. In position 3 it fires one round on pull and one round on release, making it the fastest semi-automatic trigger on the market. This trigger is ideal for both tactical and competition use...HKP-19195$386.99 -
Franklin Armory BFSIII AR-S1
FA Franklin Armory
$386.99The Binary Firing System GEN 3 (BFSIII) is a 3-position trigger. In position 3 it fires one round on pull and one round on release, making it the fastest semi-automatic trigger on the market. This trigger is ideal for both tactical and competition use...HKP-19194$386.99 -
Out Of Stock
H&K HK MR556/416 Ejector Port Cover Pin
H&K Heckler & Koch
$0.00HK MR556, HK416 Ejection Port Pin For Ejection Port.HKP-02661$0.00 -
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