From what I see of the Parasol, I got to agree that it good. 30-40 dmg on Lnd + Air and AOE effect + good bullet speed. Use with shield or farming weapon since you have less than 200 bullet
If you still want beam gun without using gara, you can use:
-Auto beam rifle: 3 round bust, good stat, had to hit with all 3 shot causing low dmg, only come with 1 slot
-Wide beam gun: large bullet and lot of ammo, good weapon to start with
-Limited Plasma Gun: the beam gun I use on my Air bot if I don't have special weapon for it
-Plasma Gun: a Paralyze tune + 2 bullet speed tune can stun most Air easily. Very high cost (my cost 250)
I don't use the Bowgun type wep so cant tell you anything about it
-Mini Bazooka: Para + 2 G. rapid tune make this a really good anti-air weapon
You can use one of the gun + shield/farming weapon/pom-pom/throwing Lios/....
Or use a beam gun + mini zook
Which Seraph you using anyway, HD or normal?
