Mark VII power crossbow
The Mark VII power crossbow was a crossbow made by Malkanthi. It had an over-stock-mounted magazine capable of holding five crossbow bolts which were each tipped with barbed heads or injector heads filled with tranquilizers. The crossbow was favored by the bounty hunter Boddu Bocck for hunting sentients and wild game.
Sources
"Wanted by Cracken" – Star Wars Adventure Journal 2 (First mentioned)- Shadows of the Empire Sourcebook (Mentioned only)