>>1179961Glocks have normal manufacturing tolerances, but have have relatively large design tolerances to accommodate non-ideal operating conditions (e.g., the gun being dirty). In contrast, many older pistol designs, such as the M1911, were designed with tighter tolerances. While tighter tolerances can enhance accuracy, it may also make the firearm more susceptible to malfunctions when exposed to dirt, debris, or lack of lubrication.