The Dangerous Power E1 marker brings amazing value and performance in simple and easy to maintain package. The E1 touches the fine points of Dangerous Power's accomplishments and performance. The E1's strengthened core is constructed of our distinguished & popular "Dump-Valve System" and is equipped with a micro-switch board capable of firing in Semi-auto mode and Full-auto fire modes capped at 25 bps. The E1's high pressure regulator is composed of the G3's highly accurate OPR system and internals. The E1's OPR's operation is service-friendly and easy to maintain. The E1's Dump Valve system is one of the finest and very efficient firing systems for Dangerous Power's spool valve markers. Maintenance for the fire assembly is simple and is constructed of 2 moving parts. The E1's fire assembly and operation proceeds from the G3's heritage, DP's greatest achievement.