ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,016, issued on June 17, was assigned to Magpul Industries Corp. (Austin, Texas).
"Firearm stock or arm brace" was invented by Duane Liptak (Wimberly, Texas) and Timothy Eric Roberts (Broomfield, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure describes a firearm stock or arm brace with an adjustable length of pull. The stock or arm brace can include a body and lower stock, where the body includes a buffer tube receiving aperture and the lower stock includes a hollow cavity with a plunger and two concentric springs therein. One or more buttons can be affixed to sides of the plunger in the hollow cavity that can be used to depress...