 The A-100 lacks a manual safety, but depends entirely on a deliberate pull of its trigger to fire it; in this way it is similar to the SIG P22X series of pistols.The double-action trigger pull is relatively long and heavy, thereby precluding the need for a safety as the probability of an inadvertent discharge is low.The A-100 resembles the SIG P228 and is similar in overall size and dimension, but differs in several respects, the most visible being the location of the take-down/disassembly lever on the right side of the frame (from the shooter's point of view) as compared to the SIG design, in which it is located on the left.