The Midwest Industries Chassis for the Ruger PC Carbine comes with a Mil-Spec Diameter 6-Position Stock Tube with waterproof compartment is a perfect upgrade for a classic rifle. The Chassis is designed to retain the factory iron sights, factory easy-change magazine well and features two anti-rotation QD sling sockets. The Chassis is constructed from 6061 aluminum and hard coat anodized. All tools and mounting hardware are included with the Chassis.