I would recomend a PMI Perfect Drop, great for any type of screw in bottle, rgardless of size.
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http://www.argen-tech.com/dingopaintball/
Dingo
- Angel LCD
- Vector
- Bob Long Millenium Body Spyder
- Power Feed Auto Mag w/ Retro Valve
- Golden Strocker
- At-85 w/ carbine stock