This RB mode version is a replacement 152mm ML-20S barrel for the WWII and post-war Soviet ISU-152 SPG and is primarily designed for the older ISU-152 DML 39-45 series kits. / Korean war.
It should be noted that the ISU-152 (Russian ИСУ-152) is incorrectly called JSU-152 in the West. This is because "Josef Stalin" is pronounced Joseph Stalin in English, but there is no J in the Cyrillic alphabet, so the correct translation should be ISU-152.
As with all RB model sets there are no instructions or fancy packaging, just the parts in a resealable plastic bag and a simple black and white label which is not a problem with this set as assembly It is very simple.
The set consists of an aluminum barrel and a machined brass muzzle brake and is basically identical to the armor scale 152mm ML-20S cannon for the Soviet ISU-152, with the separate number B35085 for the neck pin plus long and without engraved or resin parts.
The metal barrel has the correct taper and step segments and also features fine rifling inside the cupped muzzle with the machined brass muzzle brake having the correct 12 gas slots fully open with no cleaning required. There is a minor issue with the muzzle brake not having the two small locking screws that could be added for additional detail.
The overall length and diameter of the muzzle brake/barrel exactly matches a set of 1:35 plans in the 7/1988 issue of Panzer Magazine, as well as enlarged 1:72 plans in the 4/2001 issue of Tank Master Magazine .
