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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HK416, MR556 Handguard - Standard Length - Quad Rail
H&K Heckler & Koch
$0.00H&K HK MR556/416 Standard Length Quad Rail HK German HK416 & MR556 quad rail complete that includes HK 416/MR556 Handguard Screw. This handguard can also be installed on the CR556 models as well. Compatible With: HK MR556 HK 416 HK CR556HKP-02546$0.00 -
HK416, MR556 Handguard - KeyMod 9"
HKP HK Parts
$269.95HK MR556 & HK416 Standard Length 9" - KeyMod HandguardHKP-17982$269.95 -
HK416, MR556, HK417, MR762 Cylindrical Head Screw
H&K Heckler & Koch
$19.95Heckler and Koch Cylindrical Screw for MR762, HK417, MR556, HK416 Factory replacement cylindrical lens-head Allen screw for maintaining or repairing your HK417 and MR556 rifles with original-spec hardware. Compatible With: HK417, MR762 HK416, MR556HKP-22433$19.95 -
HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount
JMAC Customs
$116.951/2x28 - Plan B Taper Mount Flash Hider for MP5, HK416, MR556, APC223 The 360HD is the latest evolution in JMac Custom's Recoil Reduction Device (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and...HKP-22408$116.95 -
M-LOK Rail Panel Cover - 2 Slot
JMK
$13.95 - $18.95JMK Rail Panel Cover - M-LOK - 2 Slot JMK M-LOK rail panels are compatible with platforms featuring M-LOK slots. These modular panels are suited for numerous applications. Each panel is sold individually. M-LOK panels are CNC-machined from solid...HKP-22402-M$13.95 - $18.95 -
HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3
Nefarious Arms
$594.95Nefarious Arms HK 416C 9" Barrel The Nefarious Arms HK416/MR556 Barrel is built for shooters who demand precision, durability, and consistent performance. Made in the USA from 4150 chromoly steel, cold-hammer-forged, and chrome-lined for enduring...HKP-21906$594.95 -
HK416, MR556 Flash Hider - Threaded 1/2x28
B&T Brugger & Thomet
$125.00B&T Brugger and Thomet's Flash Hider - for 5.56mm NATO caliber weapons threaded 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles. Compatible With: HK 416 HK MR556 HK MR223 B&T APC223 AR-15 M16 5.56 / .223 firearms threaded...HKP-21757$125.00 -
HK416, MR556 Muzzle Break - Procomp - 1/2x28
Surefire
$109.95SureFire Procomp (5.56/223) Muzzle Brake - Threaded 1/2x28 The advanced SureFire ProComp 556 muzzle brake fits M4/M16 weapons and variants with 1/2x28 muzzle threads. It significantly reduces both recoil impulse and muzzle rise, allowing the weapon to...HKP-19666$109.95 -
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 -
Harris Bipod Mount - KeyMod Handguard
Ergo
$38.95Ergo Harris Bipod Mount - KeyMod Handguard Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipodsHKP-17874$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...HKP-22384$43.95 -
On Sale
HK416, MR556 Handguard - 12.5" - M-LOK
H&K Heckler & Koch
Now: $170.95Was: $189.95H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles. This handguard showcases a 12.5" length and includes a...HKP-99321Now: $170.95Was: $189.95