Wilson's ETM Vickers Duty magazine has been redesigned from the ground up and is ideal for 1911 platform pistols. It features solid tube construction, redesigned basepad, follower sand cuts for smoother operation and a molded-in last round follower detent to absolutely prevent last round feed failures. The Vickers Duty Mag is completely sealed with rear witness hole that nearly eliminates lip spreading and ingress points for sand and debris. The baseplate of the Duty mag is uniquely shaped and easy to grab under stress. Its heat-treated MAX flatwire construction never gets stressed or over-compressed like a conventional spring and is guaranteed to never require replacement even after high round counts or daily, extreme duty use.