The Tisas Night Stalker SF 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 Double Stack models combine all the features of modern high capacity 1911 pistol with the reputation for quality and value we are known for. Tisas 1911 Double Stack model’s polymer grip modules have 25LPI checkering on the front and rear and molded texture w/ an Aluminum removable magazine well. – Double Stack Series pistols come standard with our premium lockable hard case two magazines cleaning kit bushing wrench trigger lock and instruction manual. – LENGTH: 9.3 – HEIGHT: 5.74 – WIDTH: 1.62 – WEIGHT: 35 OZ (UNLOADED) – ACTION: SINGLE ACTION – SAFETY: AMBI THUMB & GRIP SAFETY – Tisas 1911 Double Stack Series Pistols are compatible with Tisas® DS Military Armament Corp. and other STI 2011 Magazines. – 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 Equivalent w/ breakaway rating of 71 in-lb – Caliber: 9MM – Barrel Length: 5.55 1:10RH Twist Button Rifled – Barrel Material/Finish: 4140 Forged & Machined Black Cerakote (H-146) – Frame Material: Forged 4140 Carbon Steel – Slide Material: Forged 4140 Carbon Steel – Grip Module: Reinforced Polymer Glass Filled – Trigger: SF Skeletonized Black Finish 4.75# Pull – Finish: Cerakote Platinum Grey (H-146) Frame/Slide Cerakote Black (H-146)Small Parts – Front Sight: Tritium Green/Orange Dot Tisas Dovetail Cut – Rear Sight: Serrated Black Glock Dovetail – Optic Mount: 1/3 Co-Witness Direct 507k/RMSc Footprint M3 x 0.05 Treads – Magazine: OEM Checkmate 17rd Capacity