I'm not a fellow /m/an, so I have no idea. I think its a catapult, but no catapult i've ever seen or found yet looks exactly like it, so im stuck...
It's def a catapult. One of the more modern renditions.
Its the Catapult redesign for Mechwarrior Online, by a guy called FlyingDebris. Its a big part of why I ended up playing that game, and spending like 80 euro on overpriced mechs in a game I wasn't having fun playing.
>>13757931
Specifically, this is the version for the backers who shelled out in the first wave of 'Founders Packages', they got a special Catapult with a pointier nose.