These 8-round magazines are made of cold-rolled steel with a fixed flush baseplate and are designed to give combat- and concealment-ready performance. Multiple testing are performed on these steel magazines to ensure their durability. Cold-formed steel, often known as products created by rolling or pressing steel into semi-finished or finished things at relatively low temperatures, is the material that Metalform uses. The steel pieces to be blued are then submerged in a solution of potassium nitrate, sodium hydroxide, and water that has been heated to boiling point in order to strengthen the steel on this magazine. ensuring that the magazine won’t rust or tarnish for the shooter for a very long time. Leading OEM brands like Colt®, Kimber®, and Smith & Wesson® receive their magazines from Metalform, America’s premier supplier of high-end 1911 magazines, to maintain their handguns operating at full efficiency. The only aftermarket option for your 1911 pistol is a Metalform magazine, which has been tested over 50 years of service in the defence industry.