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Heckler & Koch MR556A1 Standard 5.56mm NATO Black Receiver

Heckler & Koch MR556A1 Standard

MSRP $3,499.00

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 features a fixed buttstock and is supplied with one 10-round magazine, a 9 MRS handguard, and Troy Microsights.

GSIN: HCKLR-S3Q6FC1Z

Firearm Specifications

GSIN

HCKLR-S3Q6FC1Z

Parent GSIN

HCKLR-I4UPOZRH-P

Manufacturer Name

Heckler & Koch

Model

MR556A1

Series

Standard

UPC

642230253773

Manufacturer Part Number

MR556FBA1

MSRP

3499

Brand

Heckler & Koch

Category Level 2

Category Level 3

Action

Semi-Automatic

Barrel Finish

Barrel Length

Barrel Material

Butt Plate Material

Rubber

Caliber

5.56mm NATO

Caliber Alternative

.223 Rem.

Capacity Standard

10

General Finish

Black Receiver, Black Handguard

Grip Description

Polymer Black, Textured

Grip Finish

Black Textured

Grip Material

Polymer

Is Display Model

Left Handed

No

Rate of Twist

1:7 RH

Receiver Finish

Black

Receiver Material

Aluminum

Safety

TRUE

Safety Description

Ambidextrous

Sights Front

Adjustable Flip-Up

Sights General

RS: Adjustable Flip-Up, FS: Flip-Up

Sights Rear

Flip-Up

Stock Finish

Black

Stock Material

Synthetic

Stock Structure

Collapsible

Total Height

9.45

Total Length

33.9

Total Length Extended

37.68

Weight In Ounces

137.6

Weight In Pounds

8.6

Variations

Preview
MPN/UPC/GSIN
Capacity
Stock Structure
General Finish
Barrel Length
Weight (lbs)
Standard

81000459 | 642230259102 | HCKLR-XPGUL6TD

5.56mm NATO

30

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

Standard

MR556FBA1 | 642230253773 | HCKLR-S3Q6FC1Z

5.56mm NATO

10

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

CR556LCA1 | 642230254350 | HCKLR-NWG41KF5

5.56mm NATO

10

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

CR556A1 | 642230251892 | HCKLR-LDRJZ7S1

5.56mm NATO

30

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

Standard

MR556A1 | 642230246454 | HCKLR-I4UPOZRH

5.56mm NATO

30

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

Standard

MR556LCA1 | 642230254367 | HCKLR-AWIJTAN7

5.56mm NATO

10

Collapsible

Black Receiver, Black Handguard

16.5 in

8.6 lbs

$3499

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