I'm a full-time roofer. Everyone on my team usually uses Hitachi, but I use Bostic. This gun shoots consistently and looks solid like a Hitachi but BETTER. In fact, it feels like he's driving a nail harder. We make over 100 roofs a year and this is the best gun we have ever used and we have used every known gun on the market. If you are familiar with roof cannons, then this cannon is a cross between Hitachi and Bostich. PERFECT PRICE AND QUALITY ARROW! I just bought 2 more.