A crossbow was a projectile weapon that consisted of a bow mounted on a stock that shot arrows. A mechanism in the stock held the bow in its fully-drawn position, and the projectile was shot by pressing a trigger.
The crossbow seen in "Starship Mine" was rented for five days of filming from Robin Full of Pony Express Sport Shop Inc., 16606 Schoenborn Street, Sepulveda, California 91343. The crossbow is an AT A.2.G.P. model and was rented for US$125.00.