The Tisas 1911 Duty B9R DS in 9MM is now available in a double stack version! Built around Tisas’ forged slide, frame and barrel that are machined to exacting tolerances the new DS (Double Stack) models combine all the features of modern high capacity with the reputation for quality and value we are known for. Tisas 1911 DS model’s polymer grip modules have 25LPI checkering on the front/rear and molded texture w/ an Aluminum removable magazine well.
Optics Mounting Info:
Direct Mount for Holosun 507k & RMSc Footprint Optics
Factory Sights Lower 1/3 Cowitness with most optics
Optic Mount Thread Pattern: M3 x 0.5
Torque Specs
Minimum 10.2 in-lb
Max 11.9 in-lb
Blue Thread Lock or Equivilent w/ breakaway rating of 71 in-lb
