The EAA Check-Mate Witness 2311 Magazine is a premium aftermarket option for 2011 pistols chambered in 9mm. With a 20-round capacity, this magazine is crafted from high-quality American milled stainless steel, offering exceptional durability and corrosion resistance. The polished tube design ensures smooth operation, while the self-lubricating polymer follower promotes reliable feeding. Equipped with high-performance springs, this magazine delivers outstanding reliability and long-lasting performance, making it an ideal choice for competition, range use, or personal defense.