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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HK MR556, MR762 Buttstock Release Lever Insert
H&K Heckler & Koch
$26.95H&K HK MR556/MR762 Buttstock Release Lever Insert Compatible With: HK MR556 HK MR762HKP-16620$26.95 -
Out Of Stock
HK416 Gas Block - Vented
H&K Heckler & Koch
$249.95Heckler and Koch German HK416 and HK 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...HKP-01544$249.95 -
HK CC9 Magazine Spring - 12 Round
H&K Heckler & Koch
$9.95Heckler and Koch 12-Round Magazine Spring for HK CC9 Genuine 12-round HK CC9 steel magazine spring. Compatible With: HK CC9HKP-22509$9.95 -
WOOX Vertical Grip - M-LOK
WOOX
$88.95WOOX HK Rifle, SMG M-LOK Vertical Grip This M-LOK vertical grip is a compact, ambidextrous foregrip made from American walnut with a reversible dual-wall design (vertical wall AND curved wall) to suit different grip styles. The checkered texture is...HKP-22464$88.95 -
WOOX M-LOK Rail Covers - Checkered - GEN2
WOOX
$38.95 - $48.95WOOX Checkered GEN2 HK Rifle, SMG M-LOK Rail Covers The checkered GEN2 M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection. The Checkered texture uses black nylon bushings and is...HKP-22463-M$38.95 - $48.95 -
Compact Vertical Foregrip With Hand Stop - Picatinny
JMK
$98.95Compact Vertical Foregrip with Hand stop - Picatinny The JMK Vertical Foregrips are ideally suited for applications with restricted space. All grips are precision-machined from black walnut and complemented by a 6061 aircraft-grade aluminum handstop...HKP-22411-M$98.95 -
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...HKP-22384$43.95 -
HK416, MR556 Handguard Front Sight - Folding
H&K Heckler & Koch
$134.95HK Heckler and Koch Folding Front Sight for HK416, and HK MR556 Handguards German HK built in folding front sight for the forearms and handguards.HKP-19462$134.95 -
On Sale
HK416, MR556 Handguard - KeyMod 9"
HKP HK Parts
Now: $99.95Was: $269.95HK MR556 & HK416 Standard Length 9" - KeyMod HandguardHKP-17982Now: $99.95Was: $269.95 -
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...HKP-00183$149.95 -
On Sale
Harris Bipod Mount - KeyMod Handguard
Ergo
Now: $9.95Was: $38.95Ergo Harris Bipod Mount - KeyMod Handguard Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipodsHKP-17874Now: $9.95Was: $38.95 -
Out Of Stock
HK416, MR556 Barrel - 5.56 - 10.4" - Threaded 1/2"x28 - A5 Profile
Nefarious Arms
$594.95Nefarious Arms HK MR556416 10.4" A5 Barrel An expertly crafted 10.4" barrel designed for the HK MR556 and 416 platforms. Featuring the A5 profile, this barrel balances durability and weight, making it an excellent choice for both tactical and...HKP-21873$594.95