This mech paper model is Matador, designed by Clan Steel Viper before the creation of the OmniMech, a mech from the game Classic BattleTech, the papercraft is created by Yogsolthan. The size of finished model is about 263 (H) x 243 (W) x 184 (D) mm.
A serious knife fighter, it carries a dazzling array of short-range weaponry that makes the design brutally effective in an urban environment. Adding to this is its deliberately imposing design, with thick, angular plates of armor. Though the Matador is slow for a 'Mech its size, it does make use of jump jets that allow it to jump up to 120 meters. A hefty twelve tons of armor ensures that those armor slabs are not just for show. [Source: sarna]
You can download the papercraft model here: Classic BattleTech - Matador Free Mech Paper Model Download