The crossbow is the assassin's weapon, par excellence;
Raiders Of Gor, Chapter 1

 

The two men, protected behind their brethren, unslung their bows. Some such weapons are set by a windlass, but those these men carried were more swiftly prepared for fire. They could be drawn with two hands, the bow held down, a foot in the stirrup. It would take a moment, of course, to free the bow, to draw it, to set it, to extract a quarrel from the quiver, to arm it. The long bow, naturally, has a much greater rapidity of fire. This bow, on the other hand, once set, like a firearm, remains ready for fire. It is useful in cramped spaces, in close quarters, in room-to-room fighting. It is an alert weapon, responsive to the trigger; its opportunity need not be more prolonged than the movement of the target across a passageway; it is a patient weapon; it can wait quietly, motionlessly, for a long time, for its target to appear.
Chapter 30 - Witness of Gor.

The leader of the black-tunicked men stepped back, carefully, slowly, not taking his eyes from the pit master. He made no quick moves. When he was a few feet back he stopped. He then transferred the dagger he carried to his left hand and drew his sword with his right. It left the sheath almost soundlessly. It was a typical blade of this world, small and wicked. Such blades are favored by those who prefer to work close to their men. They are also designed in such a way that they may, by a skillful swordsman, in virtue of their lightness, speed and  flexibility, be worked within the guard of longer, heavier weapons. Their design is such, in short, as to overreach shorter weapons and yet, in virtue of the weights involved, penetrate the defenses of less wieldy blades. The lieutenant had also drawn his weapon.
Witness Of Gor Chapter 31

Kuurus, of the Caste of Assassins, crouched on the crest of the small hill, leaning with both hands on the shaft of his spear, looking down into the shallow valley, waiting. He would not yet be welcome.
Assassins Of Gor, Chapter 1

"He is called Drusus," she said. "He is of the metal workers."
"He is not a metal worker," I said. "He is of the Assassins.
"No," she said.
"I have seen him use a knife," I said. "He did not obey you," I observed.
Beast Of Gor, Chapter 9