Function Testing Long Guns (Part Two)

In a previous article, I covered function testing the AR-15 / M4 patrol rifle and variants. Now, let’s turn to that old standby of the police arsenal, the 12 gauge pump shotgun. It’s a common misconception that the 12 gauge pump shotgun is maintenance free. Certainly, the majority of shotguns I’ve seen were evidence of this misguided belief. The police shotgun has to be routinely cleaned, lubricated and function tested the same as any other duty weapon. One area that most shooters overlook when cleaning and lubricating the police shotgun is the magazine tube. The tube is made of steel, and the magazine spring and shell follower are made of steel. (If the shell follower in your shotgun is a thin plastic cap, discard it and get the steel one. If the plastic cap breaks inside the magazine tube, you’ll have to put the shotgun on to the workbench to get it to work again.) When the shotgun is carried in “cruiser carry” mode, the magazine spring is compressed against the interior of the magazine tube. Let some moisture get into the magazine tube, and corrosion of magazine spring can occur.