FAST assisted opening action- just flick the stud for instant blade deployment! This awesome new knife from Kentucky Tactical is designed to look just like a .50 caliber round when closed. The handle is solid metal, two tone (gold/copper) just like a real bullet. Measures 5.5" closed. Just flick the stud and the assisted opening action instantly propels open the 4" stainless steel blade. Linerlock locking mechanism.