Team’s supply of weapons (7)
I believe the answer is:
arsenal
I believe this clue is a double definition.
'team's' is the first definition.
(Arsenal football club)
'supply of weapons' is the second definition.
(I've seen this before)
(Other definitions for arsenal that I've seen before include "2014 and 2015 FA Cup winners" , "gunners, so-called" , "Weapons/ammo store" , "Football team - magazine" , "Mil. magazine; FA club" .)