ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,427, issued on July 22.

"Buffer tube insert and method of using the same" was invented by W. Scott Hemphill (Wilmington, Del.), Austin T. Bender (North East, Md.) and M. Scott McCormick (Newark, Del.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A buffer tube insert includes an elongated portion and one or more projections extending from the elongated portion. The one or more projections are configured for insertion into one or more corresponding notches on a buffer tube. Each projection includes a connection arrangement such as, but not limited to, a threaded interior for receiving a connection member such as, but not limited to, a set screw that ...