The SIG-Sauer P320 is probably the most searched of firearms on Google and the most popular handgun on the market right now. I don’t believe that there are many who would disagree with that statement. Make no mistake, the P320 was popular before the U.S. Army concluded their Modular Handgun System program and named the striker-fired SIG the winner. The key word there – and stone cold fact – being modular. I was fortunate enough to be allowed to borrow a full-size 9mm P320 from a friend recently. I must say; this SIG platform continues to leave an impression on me. I have had the opportunity to fire several 9mm Compacts and one .45 ACP Compact, in the past.