The SPEED handy M4/M16 tool can be used at the workbench or in the field to help with quick disassembly of your M4/M16.  Instead of using a metal punch to knock out the lock pins and risk marking up the receiver, the SPEED M4/M16 tool uses a special machined delrin unit to push out the lock pins without marring the receiver.  This same SPEED tool also helps with a quick and easy removal of the magazine catch every time.