Abstract: A barrel extension used to attach a barrel to a rifle. The barrel extension includes a first end having a resistance fit surface with a cylindrical shape defining a diameter of an inner bore and an internal bolt locking lugs. A second end includes an extended section. An annular flange is disposed between the first and second ends. A threaded length extends a distance between the first and second ends and spans the annular flange to define a threaded connection length. The threaded connection length is about the same length as the diameter of the inner bore.