Lancer Systems has created an enhanced magazine for the M4/AR-15 family of weapons as well as other systems using STANAG pattern magazines. By utilizing a hybrid design with a polymer body mated to steel feed lips, they have achieved a revolutionary level of durability and reliability. The polymer allows for chemical and environmental resistance in a variety of conditions while the steel feed lips resist deformation due to spring pressure. The non-tilt follower and stainless steel spring give reliable feeding and allow for long term storage without loss of performance.