User blog comment:Damac1214/Extinction Mode Reveal Trailer Released/@comment-5619949-20131029030030

I'm hoping they fixed the one issue I had with MW3 Survival, which was limited upgrades for weapons. Despite having many different possible attachments, most guns could only equip one of three sights and possibly an underbarrel. Come on IW, give us those high-tech sights and heartbeat monitors so we can really feel like we're fighting Aliens (pun intended).