A National Match Commercial pistol, was introduced by Colt at the 1930 National Matches at Camp Perry. Production began in 1932. Right side of slide marked "NATIONAL MATCH" and mainspring housing had no lanyard loop. National Match modifications to standard pistol, as described in Colt literature included: Tighter barrel, better sights and a hand-polished action. Tighter barrel probably amounted to a tighter fit between barrel bushing and barrel. Hand-polishing of action probably produced a greatly improved trigger pull, but overall, barrel slide lockup was probably only superficially improved. Colt also advertised a "Selected Match Grade" barrel. Colt advertising indicated that scores using National Match pistols improved greatly and probably did to a degree, but most of the improvement was probably due to the improved (wider) sights and improved trigger pull. The very first pistols had fixed sights, but by about SN C177,000 the "Stevens Adjustable Rear Target Sight" was available. Both fixed and adjustable sights were available thereafter throughout production. Total number of National Match pistols, with each type of sight is not known, but one author (Kevin Williams, Collecting Colt's National Match Pistols) estimates that the percentage of adjustable sight equipped National Match pistols may have been only 20 percent. Note that the Colt National Match pistol is not referred to here as a "1911A1", because this pistol lacks the military lanyard loop that is present in all Standard Government Models. Also note that "Colt National Match" Pre-war pistols are also "Government Models" as the receiver was marked as such throughout production. NOTE: Add 30- to 60 cercent for finish 99-100 percent.