H&K MR556 10-Round Magazine — 5.56/.223 Steel

The H&K MR556 10-Round magazine is a steel magazine designed for firearms that accept NATO-standard 5.56 mm (.223 Rem) magazines. It features a black finish, steel housing and follower, and is intended for use in M16/M4/AR-15-type platforms that accept standard 5.56 mm magazines. This item offers a clear, low-capacity magazine option for users who need a 10-round configuration.

Key Specifications

• The magazine capacity is 10-Round.
• Cartridge compatibility is .223 REM/5.56 NATO.
• The finish is Black.
• Construction material is Steel.
• Manufacturer is listed as Heckler & Koch.
• The product names reference MR556 while an attribute lists model 416.
• The listed weight and shipping weight are both 0.32 (unit not specified in source data).
• Quantity per package is 1.
• Compatible with M16/M4/AR-15-type rifles that accept NATO-standard 5.56 mm magazines.

Designed to match NATO-standard magazine dimensions with a durable steel body and anti-friction finish, this magazine provides a straightforward spare or replacement for owners of compatible H&K and AR-pattern platforms who prefer a 10-round configuration for range, transport, or regulatory compliance where applicable.