The Harris™ Mini #14 Bipod Adapter allows you to customize to modernize your rifle with a bipod; and it's made out of an aircraft-quality aluminum construction, commonly found in most aircraft due to its lightweight and strength, that's designed to fit with a variety of rifle types: Bushmaster, Colt AR-15, Armalite, other AR-15 clones that have round handguards, and Ruger Mini 14 and Mini 30, excluding standard and ranch rifles. Comes with instructions to fit the handguard back of your rifle to the bipod model of your choosing, but only after you've popped off the bottom handguard and installed the flange. 
Manufacturer model #: 81109.