A Wichita Falls man pleaded guilty to possessing devices that convert semi-automatic firearms into machineguns. Paul David Shaw Jr. 30, admitted that he used Snapchat to advertise the sale of Glock Switches also known as auto sears. A federal agent, acting in an undercover capacity, purchased two Glock switches from Mr. Shaw for $600 each. Click on the link to watch videos and to subscribe to my new channel Boomer Tactical / @boomertactical3168