SIG SAUER P320 Nitron Compact 9mm Semi-automatic Pistol Modularity is the name of the game, and the SIG SAUER P320 is the most modular and adaptable Pistol ever made. Designed for the unique demands of today's law enforcement and military professionals, the P320 is built around a serialized modular frame and striker-fired operating system. This allows for changes in caliber and grip size without compromising functionality, accuracy or reliability (caliber conversion kits and extra grip modules sold separately). Other premium features include a smooth, crisp trigger to make any shooter more accurate, as well as 3-point takedown that does not require a trigger pull. All this modularity, plus an exceptional trigger and proven SIG reliabilitya |it's no wonder the P320 is the new standard-issue Pistol of the U.S. Military. Modular frame assembly allows you to change calibers: 9mm, .357 SIG, .40 S & W, and .45 ACP (conversion kits sold separately) Modular frame assembly allows you to change grip sizes (extra grip modules sold separately) Comes from the factory with a Compact Medium grip module Smooth, crisp, consistent trigger pull Stainless steel slide with Nitron finish for corrosion resistance Quick take-down, no tools required and no trigger pull necessary Integral M1913 accessory rail 3-point takedown safety system Striker and disconnect safeties Includes (2) 15-rd. magazines Order today!