tool up

verb2

1. •
   (informal) To furnish with equipment.
2. •
   (informal) To arm oneself with a weapon, especially a gun.

   • “Everyone bally [balaclava]^([sic]) up, tool up,” said one man. “Let’s show the fucking media that we’re not a fucking pushover, that no more fucking foreigners are allowed into this poxy country.” — 2023