SIG Sauer's entry, which is a version of Tango 6 Optic, was chosen by USSOCOM for its SFP scope. It comes with SIG mount.
http://soldiersystems.net/2018/10/11/ussocom-selects-sig-sauer-to-provide-squad-variable-powered-scopes-second-focal-plane/
From: Soldier Systems Daily