Leaderboard

First clean your barrel/bucking then use a heavier weight bb, say 0.25 upto a max of 0.28-0.3's (they get a lot more expensive, and the benifits are minimal on 350fps) then an upgrade your hop rubber (I personally like g&g green or a tm rubber) then look into hop units/barrels etc etc why this order ... simplicity and cheapness

See I personally wouldn't spend anymore upgrading the delta, I'd save my money and buy a higher end gun. To get the most out of your gun, sp00ns advice is best. You don't want to be spending fortunes on a cheap gun.