The Firearm Blog takes a look at the SIG M18 pistol, the compact version of the M17 MHS in use by the U.S. Army and is based on the SIG P320 pistol. An airsoft version is available from SIG Air Pro Force as made for them by VFC... "In this episode of TFBTV, James Reeves visits Sig Sauer HQ in New Hampshire to talk about the new Sig M18X - the next evolution of the Sig P320 in the U.S. Military's M17 and M18 program.  This upgrade kit adds some performance features to the M18 pistol, which features are borrowed from the X-series of the Sig P320. Check out today's video for the full details."