Combat NCOs were first ordered by Delta and CIA for anti terrorist combat. They are now T-1 or Tactical One +P Pistols with a maximum hand held range of 400 yards. 11 patented components including the A3 operating system of hammer and cam. It holds the 500, 600 and 1,000 yard world records for accuracy with fixed open sights. NCO parts are made of S7 tool steel and not castings. Lifetime warranty. Here shown also in flat chrome called the Navy model. An extra charge. The NCO is the most patented pistol ever made. Warranted for life.