The disassembled parts of a high-powered rifle have been placed on your desk. You will also find and instruction manual, printed in Swahili. In ten minutes a hungry Bengal tiger will be admitted to the room. Take whatever action you feel appropriate. Be prepared to justify your decision.
Assemble the gun to the best of my knowledge, disregarding the Swahili manual since all firearms operate on the same basic principle and can usually be easily and intuitively assembled. If the hungry tiger is admitted into the room before I am finished, pull my side arm and kill said tiger. Then continue with the task at hand. Also, there is no mention of ammunition being provided with the rifle, so, to err on the side of caution it is assumed that there is none. Therefore, my side arm would be used, PERIOD.