No other .45 auto magazine can compare when it comes to reliability, durability, and the ability to remain loaded for long periods of time with out damage. The springs are specially fabricated for long service, enhanced feeding, and positive slide stop operation. All Wilson Combat magazine bodies are made of .027" (the thickest in the industry) aircraft certified heat treated stainless steel. The full moon clips allow speedy reloads/unloading of S&W model 625, model 25-2, or model 1917. It holds six rounds of 45 ACP ammunition. Comes 5 per package.