TWO-TUBE BLOW-BACK BASICS

“Two-tube” refers to the stacked body style, where the internal parts ride in parallel tubes. Sheridan, the company which at one time produced a series of pump paintball guns for Pursuit Marketing Inc. (PMI) produced the game’s first successful two-tube blow-back semi-automatic, the PMI-III…

TWO-TUBE BLOW-BACK BASICS

“Two-tube” refers to the stacked body style, where the internal parts ride in parallel tubes. Sheridan, the company which at one time produced a series of pump paintball guns for Pursuit Marketing Inc. (PMI) produced the game’s first successful two-tube blow-back semi-automatic, the PMI-III…

PROMASTERS

The troubled gun The Line SI Promaster was one of the early open bolt blow-back semi-auto paintball guns, having made it’s appearance on the market shortly after the Tippmann 68-Special and PMI-III (later VM-68). The initial production gun suffered from several design flaws which…