This Safe-to-Carry (STC) Asp OTF auto opens by pressing forward on the safety and down on the bar on the handle spine. The knife closes by pressing the locking mechanism on the opposite side and pulling the charging handle on the rear half way then pressing the safety forward and the release bar down at the same time while pulling the charging handle the rest of the way. Very strong and fast opening. Nicely contoured splash anodized aluminum handle. bead blasted blade with satin flats. Excellent condition.