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 M-LOK Compatible 13.5" Carbine Handguard
MI Midwest Industries
$269.74MI HK MR556/416 M-LOK Compatible 13." Carbine Handguard Features: Made in the USA Simple installation, direct replacement for HK factory handguard Retains factory barrel nut Mil-spec top rail Seven sides of M-LOK compatible slots Lightweight, rugged...HKP-18437$269.74 -
HK416, MR556, HK417, MR762 Pistol Grip - K2 XL
Magpul
$22.95Magpul Moe K2 XL AR Grip Designed for shooters with larger hands, the K2-XL Grip is similar to the MOE-K2 Grip – AR15/M4 but nearly 25% bigger. A drop-in upgrade for the AR15/M4, it offers a more vertical grip angle thereby improving comfort...HKP-21554$22.95 -
HK416, MR556 Rail System - 13.75" - M-LOK, Picatinny - FDE
KDG Kinetic Development Group
$399.95Rail System - 13.75" - Brown - M-LOK - HK MR556 The New KDG HK 556 M-LOK rails are direct mount rail system, replacing the factory HK 556 rail systems. These new rails are identical in design to their big brother, the KDG HK 762 M-LOK Rail system. Like...HKP-19243$399.95 -
HK416 Handguard - Super Modular M-LOK - 14.5"- DDC
Geissele
$549.9514.5" HK416 Super Modular Rail M-LOK - DDC (Desert Dirt Color) The Super Modular Rail HK416 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates...HKP-19808$549.95 -
Out Of Stock
HK416, MR556, MR762 Buttstock Locking Bolt
H&K Heckler & Koch
$0.00H&K HK MR556/MR762/416 Buttstock Locking Bolt Compatible With: HK MR556 HK 416 HK MR762HKP-16845$0.00 -
HK416, HK417, MR556, MR762 Long Disconnector Spring
H&K Heckler & Koch
$9.95H&K HK MR556/MR762/416/417 Long Disconnector Spring HK German manufactured disconnector spring. This is the longer of the 2 springs found in the trigger/sear assembly. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16774$9.95 -
HK416 A5 Stripped Upper Receiver - RAL8000
H&K Heckler & Koch
$1,559.95HK German Un-Assembled - Stripped HK416 A5 Upper Receiver - RAL 8K Brand new factory German RAL 8000 HK416A5 upper receiver. Compatible With: HK416 HK MR556 HK MR223 Looking for a matching lower for your build? STS416 A5 LOWER - Specialized...HKP-18787$1,559.95 -
Ergo M-LOK Harris Bipod Mount
Ergo
$33.95M-LOK Harris Style Bipod Mount Features: Contoured to fit Harris-style bipods Black anodized 6061-T6 alum.HKP-17851$33.95 -
HK416, MR556, AR-15 Commercial Buffer Tube Kit
HKP HK Parts
$47.95AR-15 Commercial Buffer Tube Kit Compatible With: HK MR556 & 416 All AR-15 style platforms Includes: Made with T7 7075 aircraft-grade aluminum Made in the USA with a polished inside tube Mil-Spec triple hard coat Teflon anodized...HKP-02736$47.95 -
On Sale
HK416 A1 Upper Receiver - 10.4"
H&K Heckler & Koch
Now: $2,999.95Was: $3,499.95HK416 10.4" Complete Upper Receiver Features: Factory German 10.4" length 2008 date coded P.D. trade-in, de-serialized during the de-milling process. Finish your build with a matching lower from STS Tactical. Compatible With: HK416HKP-22245Now: $2,999.95Was: $3,499.95 -
HK416, MR556 Muzzle Device - Assault - Closed Tine - 1/2x28
B&T Brugger & Thomet
$109.00B&T Assault Closed Tine Muzzle Device - HK416/MR556 - 1/2x28 Factory B&T 1/2x28 flash hider and suppressor adapter for 5.56 rifles. Includes: ROTEX flash hider Shim kit Rocksett pipette Features: Swiss-manufactured Threaded 1/2x28 High...HKP-22217$109.00 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - Black
H&K Heckler & Koch
$159.95HK Heckler and Koch's Pistol Grip with tool - Black Factory German pistol grip in black. Compatible With: HK416 HK MR556 HK417 HK MR762 HK M27 HK G28 AR-15, M4, & M16 PlatformsHKP-22208$159.95