How would you make guns fire alternately? is it in the animation?

you mean like how the PR has two places where the shots come out?
Or like a dual wielded weapon?

like the AA wraith, where the guns fire one after the other.

Create 2 markers, primary trigger1 and primary trigger 2.
In the .weapon tag, remove the projectile, or make it fire a "null" projectile (as in, detonates straight away without any effect).
In the firing effects, add 2 seperate .effects.
In the effects, set the marker name to primary trigger1 and 2 respectively.
Make the effects spawn the projectile.

There, alternatively firing triggers, though there are problems with strafing while firing.

ok, thanks.