Change the way you think about rifles with a new dimension from Thompson/Center, the company that perfected interchangeability. The Dimension's LOC System has 7 parts—a universal stock and receiver that accept multiple barrels, magazine groups, bolts and bridge scope mounts. LOC 3-lug, fluted bolts are stamped as Series A, B, C, or D for easy identification and fit multiple calibers within a series. LOC barrels are caliber specific and are also marked as series A, B, C, or D to help you match the correct bolt and magazine group. Precision Dimension barrels are 22" or 24" long and free-floating in the LOC stock and have 5R rifling and a target-style crown.