256 to allow safety latch 250 to continue to rotate back to the locked position the difference in flexibility of the firing button stops radially and axially allows latching and release of triggering mechanism 235 regardless of order of operation of the components rigidity in the axial direction stops inadvertent operation of firing button 254 and flexibility in the radial direction allows interference with smaller firing button outer diameter 258 while still maintaining smooth release operation if desired firing fork assembly 164 can be disassembled without tools from the rest of firing mechanism 160 and cleaned before a subsequent firing an operator can attach a clean firing fork assembly 164 by mating proximal spade end 196 with spade slot 198 and threading firing spacer 188 onto end fitting 166 when assembling firing fork assembly 164 with the firing mechanism in the post fired position an assembler can use depth marker line 189 to ensure proper assembly the assembler can check alignment of depth marker line 189 with the outside surface of base shell 38 a depth marker line 189 aligned with base shell 38 denotes a proper assembly a depth marker line 189 that is misaligned with base shell 38 could indicate an improper assembly such as cross threading of firing spacer 188 or incomplete tightening of firing spacer 188 0096 fig2 shows an alternate embodiment of firing fork assembly 164 thumbscrew 191 threads into a threaded hole 187 on firing fork.