Welcome to the first of many weekly GMod build challenges here at The LANBox. The aim is to provide some clear restrictions on size, weight and functionality for a chosen contraption in order to provide you with a challenge.

First up is the construction of a light tank, with some pretty restrictive criteria for you to meet. Find out more after the break.

These criteria are based around the typical role of a 1940's era light tank. It must be fast, agile, and accurate while travelling at speed. See if you can meet these criteria.

Weight: Under 20 tonne gross
Speed: Over 40kph
Minimum Armour Thickness: 20mm
Maximum Armament: 50mm calibre, maximum of two guns.
Track Traverse: 40 deg/s max
Turret Traverse: 45 deg/s max
Power: ACF engines only

Share your tanks in the comments below. You've got until Sunday 4th March to be ready for an event day to show off our results. I'll be filming it for a YouTube video so I'm keen to see your best work. More details as it happens.

Good luck and enjoy!