This mech paper model is Wyvern, designed in 2660 as an urban warfare BattleMech for the Star League Defense Force, from the game Classic BattleTech, the papercraft is created by Yogsolthan. The size of finished model is about 185 (H) x 82 (W) x 81 (D) mm.
While considered slow when compared to other medium 'Mechs, and indeed vulnerable if forced to engage in open country, the Wyvern quickly proved itself to be one of the best urban combatants ever built. Thanks to its combination of weaponry, heavy armor and jump jets the Wyverncan take on and destroy 'Mechs well outside its weight class. Standard practice during battle was for the Wyvern to use its impressive maneuverability to move around obstacles other 'Mechs couldn't navigate and get behind an enemy to unleash considerable firepower on their exposed rear. Unfortunately the Wyvern proved to be too good at its job, which included not just urban defense and garrison duty but crowd control as well; few MechWarriors relished the task of pacifying a city and threatening unarmed protestors. Despite the stigma associated with it there were some MechWarriors who enjoyed piloting the Wyvern and were amongst the proudest in the SLDF.
In the wake of the Star League's collapse the Wyvern continued to serve in the Successor States and the Maltex Corporation continued to build new Wyverns from their factory on Errai. However when the Succession Wars began and some of the 'Mech's components became lostech, the company was forced to produce a downgraded version, shifting what advanced technology they could produce over to try and keep the Thug line going. Finally the Wyvern factory was destroyed in 2835 by a battalion of raiders which took great pains to hide their identities. As the Third Succession War kicked off both sides wished to preserve what little remained of their infrastructures and in most cases refused to engage each other in cities or industrial complexes. This change relegated the Wyvern to fighting in other areas where speed was not a factor, such as mountainous or heavily-forested terrain.
Despite losses suffered over the years up through to the Clan Invasion all of the Successor States could still field at least one Wyvern in their arsenal, although few variants were ever attempted.ComStar used the Wyvern to outfit their Com Guards and, in the lead-up to the Battle of Tukayyid, did modify the 'Mech into one of their so-called "Clanbusters" to better combat the threat of the Clans. It wouldn't be until 3064 that Maltex finally restarted their Wyvern production line and a series of upgrades were developed to take advantage of rediscovered lostech which would see use of the Wyvern renewed. [Source: sarna]
You can download the papercraft model here: Classic BattleTech - Wyvern Free BattleMech Paper Model Download