An unusable STI 2011 resembling the STI Tactical 5.0 can be seen on a table during the mission “Recon by Fire”. It appears to be the “Corax” blueprint from Modern Warfare, which has a SIG-Sauer 1911 style skeletonized trigger.
STI Tactical 5.0 – 9x19mm / .40 S&W / .45 ACP