ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,299, issued on Sept. 30, was assigned to Blackstone Firearms LLC (Delavan, Wis.).

"Firearm barrel with non-metal outer sleeve" was invented by Aaron E. Painter (Delavan, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A firearm barrel with non-metal outer sleeve preferably includes an elongated tube, a first non-metal tube, a second non-metal tube, a sleeve nut and a coupler bushing. A first raised sleeve support section and a raised coupler section are formed on the elongated sleeve. The raised coupler section is formed in substantially a middle of the elongated tube. The bushing inner diameter is sized to slidably receive an outer diameter of...