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 feel MI Lifetime Warranty 100% Made in America - Keeps America Working US Patent Pending Tips from Midwest Industries: They have found during dozens of installations that there are variations in the Ruger® firearms. These variations will in no way effect the function or performance of the Ruger® 10/22 TakeDown®. Please remember this firearm is a takedown model so perfect alignment may not always be achieved. Midwest Industries has found for best alignment, start by aligning the MI handguard with the top edges of the factory plastic stock. This may take a few attempts and some patience but will produce a very satisfactory result. Some firearms will also show a left or right cant with the whole barrel assembly when locked into place. You can see this by looking from the rear of the firearm and using the top rail as a reference surface. Neither the function of our handguard or the firearms performance will be affected by these slight alignment variations of the factory manufactured firearms. On a final note if after installing the handguard on your firearms you still have any play please check that the tension adjustment ring is properly adjusted on your rifle. Additional information and photos can be found on the Midwest Industries website.