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The Excalibur was a closed bolt, dual solenoid controlled electropneumaticpaintballmarker designed by Aaron Kendrick Alexander and manufactured by AKALMP, Inc. beginning in/around 2000/2001. The Excalibur has a reputation for being solidly built and gas-efficient, albeit heavy. The standing record for the shot count is approximately 2000 shots on a 68ci/4500psi tank at 280 feet per second. Most guns in that range get around 1200 shots at that velocity. Due to patent issues encountered with Smart Parts, AKALMP no longer produces Excaliburs or any other electropneumatic markers as of 2005. They continue to make regulators including the 2liter and sidewinder regulator.
