This trigger gun is ergonomically designed to be one of the most comfortable on the market and last a minimum of 150,000 trigger pulls. Your hand will be comfortable for all 150,000 of those pulls--it will probably get tired, though. Easiest opening and holding trigger in its class, relax action trigger and comfort grip reduces trigger force up to 20% and holding force up to 60%. 42% Less Trigger Force Required. Forged brass housing providing maximum strength and unitized valve means fast and easy repair.