Designed by Military Armament Corporation here in Knoxville TN and built by Tisas to our exacting standards the MAC 1911-9 Double Stack is here! Ready for any mission with the factory RMR pattern optic cut on the slide and M1913 light rail on the frame. The polymer grip module is molded polymer with subtle but grippy texture 25LPI checkering on the front/rear and has an aluminum removable magazine well. Chambered in 9MM with a 4.25 bull barrel that is QPQ Tennifer finished with a 11º target crown is sure keep recoil to a minimum and accuracy at it’s best. – MAC Double Stack Series pistols come standard with our premium lockable hard case two magazines cleaning kit bushing wrench trigger lock and instruction manual. – LENGTH: 7.9 – HEIGHT: 5.77 – WEIGHT: 30 OZ (UNLOADED) – ACTION: SINGLE ACTION – SAFETY: AMBI THUMB & GRIP SAFETY – MAC 1911 Double Stack Series Pistols are compatible with Tisas® DS Military Armament Corp. and other STI 2011 Magazines. – Optics Mounting Info: – Optic Plate Adapter w/ Rear Sight for RMR Footprint Optics Glock Pattern Dovetail – Factory Sights Tisas Dovetail Cut Slide and Optic place cover. – Optic Plate Cover w/ Rear Sight: M4 0.7 – Optic Mount Thread Pattern: 6/32 TPI – 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: 4.25 1:10RH Twist Button Rifled – Barrel Material/Finish: 4140 Forged & Machined Hard Chrome Finish – 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: QPQ Slide Cerakote Black (H-146) Frame & Small Parts – Front Sight: Fiber Optic Tisas Dovetail Cut – Rear Sight: Plate Adapter: Serrated Black Glock Dovetail Plate Cover: Tisas Dovetail Novak Style – Optic Mount: RMR Footprint 6/32 Treads – Magazine: OEM Checkmate 17rd Capacity