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, HK417, MR762 Folding Rear Sight - 3mm
H&K Heckler & Koch
$344.95Heckler and Koch 3mm Flip Up Rear Sight for HK416, MR556, HK417, MR762 HK factory quick-release flip-up rear sight for MR556, MR762, HK416, and HK417 platforms. This rear sight attaches directly to...HKP-01405$344.95 -
Harris Bipod Adapter - Picatinny
GG&G
$39.95Harris Bipod Adapter Made By GG&G Enables a Harris Bi-pod to attach to a mil-spec Picatinny rail. GG&G's AR-15 Harris Bipod Adapter is rugged and low profile. Features of the GG&G Bipod Adapter...HKP-02307$39.95 -
Out Of Stock
HK416 Upper Receiver Kit - 10.4" - 5.56
HKP HK Parts
$2,485.95HKP 416 10.4" 5.56 Complete Upper Kit Complete Each kit includes the complete upper assembly, bolt group, tungsten buffer, & high-reliability SS recoil spring. This upper kit is a complete gas piston...HKP-17662$2,485.95 -
HK416, MR556 Charging Handle Roll Pin
H&K Heckler & Koch
$7.95HK Heckler and Koch Clamping Sleeve or Roll Pin for Pawl on Charging Handles This is the longer one that is used on the outside of the charging handle. There are one of these pins used per charging...HKP-17063$7.95 -
HK MR556, MR762 Rail Segment - 5 slot
H&K Heckler & Koch
$39.95HK MR556 & MR762 Rail Segment - MRS 5 slot Rail ASM New Factory HK 5 slot rail segment for the MRS style HKey mod rail forearms. ***Not compatible with the Euro spec HKey "Small", this is for the...HKP-17510$39.95 -
Magazine Assist - 5.56 - 3 Pack
Magpul
$9.95ORIGINAL MAGPUL® 5.56 NATO, 3 PACK When installed on the base of a 5.56x45 rifle magazine, the original Magpul provides improved speed and control during high stress, tactical magazine changes...HKP-17320$9.95 -
HK416 OTB E1 Buttstock and Buffer Tube Set
H&K Heckler & Koch
$469.95H&K MIL-SPEC 416 OTB Buffer Tube & HK E1 Stock Combo Genuine HK416 E1 Stock with the new style marine environment "over the beach" buffer tube. Buffer tube has ball bearing rollers to tighten the...HKP-20104$469.95 -
HK416, MR556 Handguard - 10.5" - M-LOK
Geissele
$472.00HK416 Super Modular Rail MK15 M-LOK - 10.5" The Super Modular Rail HK416 MK15 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock...HKP-19990$472.00 -
On Sale
HK MR556, MR762 H-Key 14 Rail Segment
HKP HK Parts
Now: $13.46Was: $39.95HKP HK MR556/CR556/MR762 H-Key 14 Rail Segment 14 slot rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being...HKP-17846Now: $13.46Was: $39.95 -
HK416, MR556 Charging Handle Release Latch
H&K Heckler & Koch
$39.95Heckler and Koch HK MR556/416 Charging Handle Release Latch Perfect replacement item for the MR556 and HK 416 charging handle. New HK German manufacture. These can become chewed up and damaged with a...HKP-16553$39.95 -
HK416, MR556, HK417, MR762 Rear Sight - Flip Up 2mm - RAL8000
H&K Heckler & Koch
$446.95Heckler and Koch HK416, MR556 Flip Up 2mm Rear Sight - RAL8000 Factory HK quick change, flip up rear sight in RAL 8K with a 2mm aperture. Attaches directly to any standard Picatinny rail using a...HKP-18500$446.95 -
HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter
ST Inc
$55.00ST Inc Limiter Cam for HK416, MR556 ARC-Fire CARL Lever - 2, 3, and 6 Round Options Limiter cam for the ST Inc CARL lever used with the HK416 and MR556 ARC-Fire trigger setup. Available in 2, 3, and...HKP-22565-M$55.00