Firearm barrel plug

A generally cylindrical training/safety plug for use in firearms, the plug comprising:

• a generally cylindrical chamber end having a size adapted to fit within a chamber of a designated firearm, the chamber end having a cross-sectional dimension sufficient to prevent the chamber end from extending into a barrel of the designated firearm, the generally cylindrical chamber end further comprising a strike surface for receiving an impact of a firing pin of the designated firearm and a proximal end dimension such that the chamber end is not engaged by an ejector mechanism of the firearm;
• and
• a generally cylindrical shaft comprising a barrel end coupled to and extending distally from the generally cylindrical chamber end;
• the barrel end of the generally cylindrical shaft further adapted to extend the barrel of the designated gun and extend beyond an end of the barrel,
• wherein the training/safety plug renders the designated firearm inert when the chamber end is disposed in a chamber of the firearm and the barrel end extends into the barrel of the firearm, the cross-sectional dimension of the chamber end prevents removal of the plug through the distal end of the barrel and installation and removal of the plug requires the firearm to be disassembled to expose the chamber end of the barrel.