With over 30 years of customer satisfaction, this design has proven reliable, and it has 50% tighter tolerances than other military specification magazines. Shooting Star Classic Magazines have the same length as stock magazines, but with extra capacity and improved performance. This design is the same CMC supplies to America's top 1911 manufacturers for use as factory standard in their pistols. This line of .45 ACP magazines has never suffered from the common problem of cracked feed lips and is also available with a base pad.