The Midwest Industries Stock Tube Adapter fits a Picatinny rail interface, enabling the user to install an AR-15 collapsible buttstock to an alternative rifle platform. The tube has 6 different positions for length of pull, and contains a hollow, water resistant internal compartment for the storage of small parts or batteries. Does not function as a buffer tube. Midwest Industries is a proven leader in the firearm industry. Made in the USA, focusing on the small details to make your rifle platform better.

• Super easy installation.
• Constructed from 6061 aluminum hard coat anodized.
• 6 position Mil-spec diameter tube.
• Easily accessible water proof storage in tube.
• Super clean compact design.
• Overall Length 6.750.
• Weight 7.5 oz.
• 100 percent made in the U.S.A.