Designed by Military Armament Corporation here in Knoxville TN and built by Tisas to our exacting standards the MAC 1911-9 DS 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 11Adeg target crown is sure keep recoil to a minimum and accuracy at it's best.MAC DS 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 SAFETYMAC 1911 DS Series Pistols are compatible with TisasA(R) DS Military Armament Corp.(TM) and other STI 2011(TM) Magazines.Optics Mounting Info: Direct Mount for Holosun 407c & RMR Footprint Optics Factory Sights Lower 1/3 Cowitness with most optics 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