US 12,345,490 B2
Extended life composite matrix-wrapped lightweight firearm barrel
Joshua M. Kunz, Exton, PA (US)
Assigned to Brown Dog Intellectual Properties, Exton, PA (US)
Filed by Brown Dog Intellectual Properties, Exton, PA (US)
Filed on Sep. 7, 2022, as Appl. No. 17/939,066.
Claims priority of provisional application 63/241,898, filed on Sep. 8, 2021.
Prior Publication US 2023/0074469 A1, Mar. 9, 2023
Int. Cl. F41A 21/02 (2006.01); F41A 21/22 (2006.01)
CPC F41A 21/02 (2013.01) [F41A 21/22 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for manufacturing a firearm barrel, the method comprising:
providing a barrel for a firearm;
forming, within the barrel, a chamber configured to hold an ammunition cartridge, wherein an entire geometry of the chamber, including an interior of the chamber, is formed to a final depth within the barrel through the forming;
after forming the chamber within the barrel with the entire geometry of the chamber being formed to the final depth, performing a material modification process that modifies one or more metallurgical properties of the barrel, wherein no further material is cut away from the interior of the chamber by machining after the material modification process is complete;
after performing the material modification process, applying a composite matrix wrapping that surrounds an outer circumference of the barrel over a length of the barrel; and
after the composite matrix wrapping is applied, processing the barrel so as to form a receiver interface onto a portion of an outer surface of the barrel, the receiver interface at least partially overlapping the chamber in a transverse direction.