Heckler & Koch

Heckler and Koch MR556 A1 Semi-Automatic Rifle With Troy Microsights 5.56 NATO 16.5" Barrel 30 Round Black

Item #11392500 MPN MR556A1 UPC 642230246454

Caliber 5.56mm NATO

Condition New

Manufacturer

Name Heckler & Koch

Phone 706-568-1906

Website http://www.hk-usa.com

Address 5675 Transport Blvd , Columbus, GA 31907

Heckler and Koch MR556 A1 Semi-Automatic Rifle With Troy Microsights 5.56 NATO 16.5" Barrel 30 Round Black

A direct descendant of the HK416, the MR556A1 is a semi-automatic rifle configuration with match rifle capability developed for civilian users. The MR556A1 uses the HK proprietary gas piston operating system, employing a piston and a solid operating "pusher" rod which virtually eliminates malfunctions common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. The HK Modular Rail System (MRS) is truly free-floating for maximum accuracy. The MRS handguard has a more ergonomic design, yet retains many features from the previous FFRS. It uses an HK proprietary keyhole design to allow the attachment of Picatinny rail segments to the handguard. The MR556A1 also has a Picatinny rail machined into the top of its upper receiver for mounting optics and mechanical sights. Major subassemblies, including the upper receiver/barrel assembly, are fully interchangeable with other high quality AR-style firearms. The MR566A1 is produced in the USA from both American and German-made components. The German-made, unchromed barrel is produced by HK's famous cold hammer forging process with the highest quality steel for a barrel that provides superior accuracy and long service life. This model is supplied with one 30-round magazine, a 9" MRS handguard, and Troy Microsights.

Brand HK

Category Tactical Rifles

Caliber 223 Rem / 5.56 NATO

Model MR556

Series A1

Stock Finish Black

Action Semi-Automatic

Sights Flip Up Front & Rear

Capacity 30+1

Muzzle Muzzle Brake

Grips Black Polymer

Hand Right

Metal Finish Black

Oal 33.90"-37.68"

Receiver Material Aluminum

Safety Ambidextrous

Stock Description Adjustable

Stock Finish Group Black

Stock Material Synthetic

Trigger Two-Stage

Twist 1:7"

Weight 8.60 lbs

Barrel Description Heavy Hammer-Forged

Barrel Length 16.50"

The information below comes from our Gun Caliber Dictionary and is for general reference only. It does not describe the specifications of this particular item.

The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington

$0.00

● Out of stock

FFL required

This item ships to a licensed firearms dealer, not to your home. Your dealer completes the transfer and the required background check when you collect it. You can choose your dealer during checkout. How transfers work →

Returns and exchanges under our terms of sale.
Ships from our warehouse — shipping policy.
Talk to a person: 888-900-4868.

Available now

5.56mm Nato 20 Rounds Ammunition PMC 55 Grain Full Metal Jacket

$11.04

PMC X-TAC 5.56 NATO 62 Gr M855 FMJ Ammo 20 Rounds

$11.17

Heckler and Koch MR556 A1 Semi-Automatic Rifle With Troy Microsights 5.56 NATO 16.5" Barrel 30 Round Black · FFL required

Out of stock

$0.00

Write a review

Rate this product

Select a rating

Your review Reviews are checked before they appear, which usually takes about a day.

CREATE AN ACCOUNT

Verify Email

Password

Verify Password

First Name

Last Name

Address Line 1

Address Line 2

City

State

Zip

Phone

SAVE CLOSE