The Chip McCormick RANGE PRO 1911 magazine from CMC Products is a combination of some of CMC's best new magazine technology and all new basepad design that makes the RANGE PRO a top choice for carry, competition or general range use at a price that can't be beaten. The extended tube design allows the use of a longer high-performance spring and improved spring life over traditional extra capacity 1911 magazines. The all metal, anti-tilt follower is durable and easy to load while the polymer baseplate removes easily for cleaning and maintenance. Available in polished stainless or black fluoropolymer finish, the RANGE PRO will be one of your favorite 1911 magazines. 9mm Caliber Fits All Full-Size (Government Model) 1911 Handguns 10 Round Capacity Heavy-Duty Corrosion Resistant Stainless Steel Body Formed on All-New Tooling Laser Welded Tube Integral Feed Ramp for Reliable Feeding of All Bullet Designs Numbered Witness Holes for Visual Round Count Unique All-Steel Anti-Tilt Follower is Durable and Easy To Load Extended Tube Design Allows the Use of a Longer Spring High Tensile Music Wire Spring Removable Base Pad for Easy Cleaning Smooth Finish for Easy Insertion / Removal Long-Lasting Function in Dirty Environments Mfg 100 percent Satisfaction Guarantee