Windham Weaponry mcs

[theboyscout]

What do you think of the Windham Weaponry mcs? Is it better to have one gun multi caliber or many guns of different caliber?

Does anyone know the reliability of the Windham Weaponry mcs, the custom ability of the rifle?

Any info to share at all.

Here's a YouTube link of one gun changing between the calibers and another explaining there preferencephalitis