Pictured below is a really great machined 12 Gage power head it is mounted on a two piece aluminum pole about 7' long the power head has bayonet threads. Bayonet threads allow you to load and unload with a half turn of the barrel instead of unthreading the barrel. It has a safety nut on the bottom. I have had this since the 60s and have fired it only twice on one shot I killed a 10' shark. Maybe some one can get some use from it $100. If interested give me a call.
Ron 850-712-2603
Me with the shark see the little round hole from the 12 gage