Midwest Industries Inc made hand guard for Ruger 10/22 TakeDown models. Only compatible with new Ruger 10/22 TakeDown models. Features Lightweight design with a slim profile True Free Float Design Mounting bolt and wrench included 8.0" or 13" overall length 1.290" Inside Diameter Two built in anti-rotation QD sockets Features 8 sides of M-Lok slots 5-slot polymer M-Lok rail included Weight 7.3oz (8") or 9.9oz (13") installed Construction from 6061 Aluminum, Type 3 Hard Coat Anodized for a lifetime of service Fully dehorned for a non-abrasive, comfortable fe Mfg: Midwest Industries, Inc.