Master Models' 1/350 HMS Repulse Armament set for Trumpeter's 1/350 release includes 3 different calibers of barrels. There are 6 of the 15"/45 Mark 1 barrels, machined from aluminium. These barrels are intended for a mount with blast bags, and as such are shorter than a full length barrel. Also included are 6 4"/45 QF barrels and 9 of the 4"/45 BL guns (in triple mounts)