The Midwest Industries Chassis for the Ruger 10/22 is a perfect upgrade for a classic rifle. The Chassis has a threaded end to accept AR15/M4 Buffer Tubes, and features a slim lightweight profile and 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. FeaturesHard Coat Anodized Slim Light Weight ProfileThreaded End to Accept AR15/M4 Buffer Tubes (Compatible with both commercial and Mil-Spec tubes) *Tube and castle nut not includedMounting Hardware Included1.290" Inside DiameterTwo built in anti-rotation QD socketsFeatures 8 sides of M-Lok slots5-slot polymer M-Lok rail included