Abstract: Methods and apparatus related to design and construction of lightweight and mobile rail gun barrels. The barrels comprise a pair of elongated, generally parallel conductive rails extending along opposite sides of the bore and being symmetrical about a longitudinal axis of the bore; a pair of elongated insulators disposed generally coextensively with the rails and circumferentially between them and maintained in a compressed state; a circumferentially sleeve surrounding the insulators; a plurality of Belleville containment disk maintained in a stack that are compressed and surround the circumferential sleeve, each containment disk having a substantially hollow form with an outer surface, and an inner surface; and a plurality of longitudinal tension rods, disposed substantially parallel to the longitudinal axis of they bore and disposed external to the sleeve, the tension rods compress the plurality of Belleville containment disk. A protective sleeve and cooling channels can form part of the barrel.

Abstract: Shown is a locking interface assembly that facilitates the integration of a commercial Long Gun Barrel tube with an existing gun mount of a conventional Tank. The interface assembly allows the non-conforming tube to be fitted to the mount in a precise fashion, eliminating clearances between the mount and tube, permitting re-tightening of elements that become loose during high inertial loadings. The interface assembly is comprised of a thrust nut, bearing, retaining ring, king nut, adapter, pin, nut key, locking pin, retainer pin, retaining ring key, key retainer pin and screw. The retaining ring is slid over the tube, followed by the a coupling subassembly comprised of the bearing and the thrust nut. The coupling subassembly engages the tube shoulder to prevent the bearing from rotating. The king nut engages the tube to capture the bearing against the tube shoulder and to prevent the bearing from moving with respect thereto.