Maine-based MG Industries (MGI) has continued the improvement of its MARCK 15 line and introduced a new option to the platform.

The all new 5.56 MARCK 15 configuration for either complete weapon system or as a conversion package  is now shipping. The complete weapon system comes in a standard pistol case.

MGI’s MARCK 15, also known as the Hydra, platform is a base system that the user can configure to any mission-specific rifle.

The MARCK 15 rifle features the complete modularity and interchangeability of the Hydra Modular Rifle System. The 5.56 Hydra weapon system is ready to fire right out of the box and comes standard with a Modular Lower Receiver with a 5.56mm Magazine Well, the QCB-D Upper Receiver and a 16-inch barrel with a low profile gas block or with an A2 style front sight tower.

By simply changing the bolt, barrel and mag well without tools on this system, the user will be able to fire 40-plus calibers, including .22 rimfire, .223 or 5.56, 6.5 grendel, 6.8 spc, thumper, .458 socom and the .50 Beowulf.

Founded in 2005, MGI has pushed the envelope in terms of the platform’s versatility by making it an individual, modular unit. While the ability to switch between calibers may seem like a complicated process, the average shooter can do it in around 90 seconds — faster after some practice — with MGI’s Marck 15, and all of its controls retain the familiar A2 configuration. The impressive aspect to the caliber switch is that the Hydra does it all with standard barrels and magazines no extra proprietary components are needed.