Is this a moc or official set?

I recently received some legos from a guy, and it came with this mech thing I dont recognize. Is this an older set, or a moc? i've made some minor changes to it as i lost a few pieces but you get the gist. more of a "I wonder if someone actually made this" because its very poseable and neat. the minifig didn't come with it i just made a mech pilot submitted by /u/mrpastaa [link] [comments]