What game is this leaking?

http://www.reddit.com/r/Games/comments/2lrud0/leaked_halo_5_footage_shows_aim_down_sights_and/

Halo 5 leak of Project Contingency leak?

Yep. You got them. Contingency will feature ironsights in order to make the gameplay true to that of Halo 3.

I guess this means its an actual Halo 5 leak.

First of all, notice the fact that you're seeing a RDS Battle rifle, when you've seen ours which has a scope, and also isn't finished.

Secondly, if that Halo 4 sniper rifle didn't give it away I don't know what the hell else would have

Thirdly look at the materials, especially the covenant shells, they look nothing like our current shell materials

Oh I only saw the top one.

This is Midship from Halo 5 guardians beta well its a remake of Midiship from Halo 2 should I say
anyways ITS NOT ADS i'ts just a new Zoom animation Josh Holmes confirmed this on his twitter

https://twitter.com/JoshingtonState/status/531541844178792448

heads up though tomorrow is Halo fest and Halo 5 guardians will be played there!