Heckler & Koch MR223 A3 Slimline 11", sand color

Heckler & Koch MR223 A3 Slim-Line 11" RAL8000 – Caliber .223 Remington
The Heckler & Koch MR223 A3 Slim-Line is a semi-automatic rifle in caliber .223 Remington. The version described here features an 11" (279.4 mm) long barrel and a CERAKOTE coating in RAL8000.

The controls of the MR223 A3 are designed for ambidextrous use. This includes especially the bolt catch lever and the magazine release lever, allowing operation for both right- and left-handed shooters.
Slim-Line Equipment

The free-floating barrel is surrounded by a Slim-Line handguard with HKey interfaces. At the 12 o’clock position there is a STANAG profile, at the 6 o’clock position a MIL-STD-1913 Picatinny interface.

The length-adjustable Slim-Line stock has six locking positions. Additional equipment includes a pistol grip and an adjustable quick-change folding sight.

The barrel has an M15x1 muzzle thread and is equipped with a flash suppressor in the described version.
Technical Data

Feature
Specification


Manufacturer
Heckler & Koch


Model
MR223 A3 Slim-Line


Weapon type
Semi-automatic rifle


Caliber
.223 Remington


Barrel length
11" / 279.4 mm


Magazine capacity
10 rounds


Sight
Adjustable quick-change folding sight


Sight line
approx. 340 mm


Handguard
Slim-Line with HKey interfaces


Top interface
STANAG profile, 12 o’clock position


Bottom interface
MIL-STD-1913 Picatinny, 6 o’clock position


Operation
Ambidextrous controls


Stock
Slim-Line, length-adjustable, 6 locking positions


Muzzle thread
M15x1


Muzzle device
Flash suppressor


Finish
CERAKOTE


Color
RAL8000 / sand color


Weight
approx. 3.2 kg


Overall length
approx. 709–805 mm


Height
approx. 240 mm


Width
approx. 74 mm


Specified application
Hunting

Scope of Delivery

The specified scope of delivery includes:

1 × Heckler & Koch MR223 A3 Slim-Line 11"
Folding sight
1 × 10-round magazine
Padded plastic case
Operating manual

Other: The RADIAL DEFENSE Nexum HK KDR adapter for Slimline stock RAL8000 (right) is shown as an example and is not included in the scope of delivery, but highly recommended. The price for this is 138 EUR.

Radial Defense NEXUM KDR Adapter for HK MR223 / HK416 Slim-Line Stock
The Radial Defense NEXUM is a push-button sling adapter (KDR) for the Slim-Line stocks of Heckler & Koch MR223 and HK416.

The adapter is characterized by its linear design. The attached carrying sling is guided past the stock towards the user. The flat, contoured design simultaneously reduces protruding areas on the stock.

The NEXUM is made from 7075-T6 aluminum and is either black hard-anodized or coated with CERAKOTE in RAL8000 depending on the chosen version.
Design and Operation

The shape of the adapter is matched to the contour of the HK Slim-Line stock. The compact design largely avoids additional protruding edges on the stock.

The design of the adapter allows the user to reach the installed sling loop by feel, without requiring direct visual contact with the mount.

The version described here is intended for right-handed users and is mounted on the right side of the stock.

The Radial Defense NEXUM is exclusively intended for the corresponding HK Slim-Line stocks.

Compatible models or platforms according to product information:

Heckler & Koch MR223 with
entsprechender Slim-Line-Stock
Heckler & Koch HK416 with corresponding Slim-Line stock

The adapter is designed for use with KDR and US QD sling swivels. This includes, for example, corresponding sling swivels from various manufacturers.

Due to possible manufacturing and dimensional tolerances in sling swivels, the secure locking of the respective swivel used should be checked before use.
Product details

Feature
Specification


Manufacturer
Radial Defense


Model
NEXUM


Product type
Ball pressure sling adapter / KDR adapter


Compatibility
HK Slim-Line stock


Specified models
HK MR223 / HK416


Version
Right-handed


Mounting position
Right side of the stock


Material
7075-T6 aluminum


Sling interface
KDR / US QD


Variant black
Hard anodized


Variant RAL8000
CERAKOTE coated

Available versions

Black: 7075-T6 aluminum with hard anodized surface.

RAL8000: 7075-T6 aluminum with CERAKOTE surface coating in RAL8000.
Product safety information:Manufacturer: 
Heckler & Koch GmbH
Heckler & Koch Str. 1
D-78727 Oberndorf a. N.

Responsible person: 
Heckler & Koch GmbH
Heckler & Koch Str. 1
D-78727 Oberndorf a. N.
Germany
www.heckler-koch.com
WARNING: Proof of acquisition authorization is required to purchase this product!!!