When they fire, Scraplaunchers determine where their shot lands exactly like stone throwers. They can move and fire, and have a 90° arc of sight. All hits from the Scraplauncher use the large template and are resolved at a Strength of 3, causing 1 wound. They have the Killing Blow special rule. Other than this exception, normal Armour Saves apply.
A Scraplauncher is a manic construction of metal, wood, Gnoblar and cave-beast, and as a result uses the Misfire chart.