Later post 1990 10×32 base Line SI powertube. The threads on these giant base tubes are 10×32 and the ID is huge. They are hard to find. I list them for around 35 dollars occasionally under the Line Si Powertube category:
http://www.baccipaintball.com/parts/pump/nelson/powertubes/line-si-powertubes.html
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Later post 1990 10×32 base Line SI powertube.
Posted by Baccipaintball.com on Sunday, May 12, 2013