 According to authors, Harry L. Derby and James D. Brown, the firing pin is inherently weak and is prone to breakage because of a recess cut provided for the crossbolt and is prone to breaking at this point.The sturdier hammer firing mechanism was developed and included in the Type 94 to replace the poor striker on the Type 14 Nambu.The locking system is a rising-block type which floats independently between the lugs underneath the chamber end of the barrel.