As a retailer, you know that many customers want a copy of the guns used by the U.S. Military. There is no denying that a certain segment of buyers wants them. It's primarily because the gun has been adopted by the military, or they believe that the government selects only the best equipment.

And now since the military has replaced the M9 Beretta semi-automatic handgun with the Sig M17 and M18, many customers will want one. So, Sig Sauer recently introduced the P320 M18 to the...