CMC Products Magazine, Range Pro, 9MM, 10 Rounds, Fits 1911, Stainless M-RP-9FS10 The all-new Range Pro 1911 magazine is a combination of CMC's best magazine technology and all new basepad design that makes the Range Pro a top choice for carry" competition or general range use. The new extended tube design allows the use of a longer" stainless steel spring and improved spring life over traditional extra capacity 1911 magazines. The stainless steel anti-tilt follower is durable" promotes easy loading and was extensively tested for reliability with a wide range of bullet weights and designs. The polymer baseplate removes easily for cleaning and maintenance.