The Wilson Combat 500-9C8 5009C is a 1911 magazine renowned for its stability, endurance, and ability to stay fully loaded for extended times without suffering any damage. This capacity showcases the magazine\'s long-lasting reliability. The magazine springs are uniquely crafted from top grade spring with the highest tensile strength, which ensures lengthy service life, superior feeding, and effective slide stop functions.This magazine is produced from certified aircraft grade stainless steel, and is heat treated to attain maximum durability and service life. This particular ETM (Elite Tactical Magazine) Officer model is characterized by a stainless steel finish and an inclusive ETM base pad.