HK416 / MR556 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
HK416 Vented Gas Block for 14.5" Barrels
H&K Heckler & Koch
$249.95HK German 416, MR556 14.5" & 16.5" & 20" Gas Block Complete This is the factory-correct gas block with the ambi sling attachment points, as well as the bayonet lug milled into the gas block. Perfect for those who want to swap the MR556 gas block...$249.95 -
HK416 A5, MR556 A3 Barrel Nut
Nefarious Arms
$39.95Nefarious Arms HK MR556 A3/416 A5 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option. Meticulously crafted in the US to the highest quality standards...$39.95 -
HK416 A5, MR556 A4 Gas Vent Screw - 2.3mm
H&K Heckler & Koch
$29.95H&K MR556 A4/416 A5 2.3mm Gas Vent Screw German 2.3mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5$29.95 -
HK416, MR556 Charging Handle - E2
H&K Heckler & Koch
$139.95Heckler and Koch E2 Charging Handle for HK416, MR556 Factory HK charging handles for the MR556, HK416 platform. The standard MR556 charging handle allows the release latch to be configured on either the right or left side for user preference. The HK E2...$139.95 -
M-Lok Optic Mount - Offset Light
Magpul
$36.95Magpul M-Lok Offset Light / Optic Mount - Aluminum The M-LOK Offset Light/Optic Mount, Aluminum provides the user with an ambidextrous platform to mount weapons lights or optics at both the 11 and 1 o'clock positions on M-LOK compatible hand guards and...$36.95 -
HK416 A5, MR556 A4 Barrel - 5.56 - 11" - Threaded 1/2"x28 - A5
Nefarious Arms
$594.95Nefarious Arms HK MR556/HK416 11" A5 Barrel ***THE BARREL EXTENSION RIM IS MARKED "HAUS" DUE TO AN ERROR BY THE BARREL EXTENSION SUPPLIER. THE MARKING IS NOT VISIBLE ONCE INSTALLED. THESE BARRELS ARE GENUINE NEFARIOUS BARRELS AS NEFARIOUS...$594.95 -
On Sale
HK416, MR556 Extractor - BLEMISHED
HKP HK Parts
Now: $18.71Was: $39.95HKP HK MR556/416 Extractor - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HKP HK MR556/416 extractor is a precision-engineered component designed...Now: $18.71Was: $39.95 -
HK 416, HK MR556 Folding Front Sight For Handguard
H&K Heckler & Koch
$134.95Folding Front Sight - German - HK416, MR556 Handguards German HK built in folding front sight for the forearms/handguards.$134.95 -
HK G36C, SL8 Flash Hider - 4 Prong - Threaded 15x1 RH
GSG9
$86.95GSG9 4 Prong Flash Hider - 15x1 RH Finest quality 4-prong flash hider that is threaded 15x1 right-hand twist (factory HK thread pitch). Perfect for the SL8, G36C, or other type of HK conversion. It also counts as one US-made part for 922R compliance...$86.95 -
Out Of Stock
HK Ambidextrous Sling - Green
H&K Heckler & Koch
$149.95HK Ambidextrous Sling - Green This sling is the factory HK Green 1.25" Ambi Sling with dual HK sling hooks for use on either the left or right side of the weapon. Best used with the ambi sling pins as the option shown below. Can be used on nearly...$149.95 -
On Sale
Ergo Harris Bipod Mount - KeyMod Handguard
Ergo
Now: $7.46Was: $38.95Ergo Harris Bipod Mount - KeyMod Handguard Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipodsNow: $7.46Was: $38.95 -
HK MR556 A4 Hammer - Incomplete - Semi-Auto
H&K Heckler & Koch
$43.95Heckler and Koch Hammer for HK MR556 Semi-Auto rifles Factory-original German steel hammer for MR556 A4 rifles. Designed as a direct replacement for worn or damaged hammers in MR556 A1 and A4 trigger assemblies. Compatible With: MR556A1 MR556...$43.95