Stronghold Ammunition is an ammo manufacturer in GTA 6.
A box of Stronghold Ammunition bullets can be seen in the official artwork for 
In addition, a number of the bullets appear to be scattered across the table.
The brand has not been spotted in any other Grand Theft Auto 6 marketing to date. However, it almost certainly appears during gameplay too.
The Stronghold Ammunition logo can be seen in multiple ways, appearing to resemble both a locked door and a downward-facing bullet burrowing into its target.
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