Presumably either those within the Tabernacle manufacture them or they had accumulated vast stockpiles of arms and ammunition in case their refuge was ever breached.
In the late 23rd century, a savage trained only to kill finds a way into the community of bored immortals that alone preserves humanity's achievements.
What was the budget for Zardoz?
$1.57 million
How much did Zardoz earn at the worldwide box office?