Mec-Gar is an Italian family owned and ran business that has been making high quality and affordable magazines since it founded in 1965. This full size 1911 11 round extended magazine is a testimony to that excellence in quality. The carbon steel tube is heat treated for added strength, and the follower spring is manufactured out of high tensile music wire. If you are looking for a high capacity 1911 magazine, that will function when you need it to, then this magazine is for you.