What special stat is good for guns?

[Zachshock]

What stat is good for guns I want to do a gun build with the perk cowboy.

[Belanos]

Agility, it's the main SPECIAL for guns. Strength is also needed for certain weapons, though I suspect it's not going to be that important if you're focusing on weapons influenced by the Cowboy perk.

[Akasaki]

A certain str (some guns need this)
Some per (to see you target from a far)
Some luck (help critical)

[Belanos]

Perception and Luck of 6 allows you to get the Better Criticals perk, which is useful when using guns. Though you can start with 5 in each and just get the implants for those two stats.

[talgaby]

4 ST, 5 AG, 5 LU is probably the minimum to not feel any kind of drawbacks, although the SPECIAL stats in general play a very minimal role beyond acting as prerequisites for some perks.
If you plan on using really large heavy weapons, 6 ST will be needed. Both are assuming you will get the free +2 ST in OWB relatively early.

[キールス]

Strength to combat weapon sway and Agility to improve gun skill, reload speed, etc.

[josh]

luck is the most important for the critical chance, but agility is nice for flavor and perk req.

with the right set-up you can get 100% crit chance on certain weapons

[Balto the Thief]

Luck and agility.