Please advise..., for a Ramwhat Viper gun, what is the SIZE of the female pole connection opening (on the base of the gun) into which the male connection of an extension pole is attached (screws into) ? ( is it a starndard size like, say, 1/2 inch, 3/8 inch, or such? What size ? ).

Re: Ramset powder actuated gun like used for putting up ceiling wire, etc., what is the size of the threads in the fitting to which the pole is attached ? (would a piece of threaded rigid fit ?, so as to enable a short pole short enough to use on Ramset pole gun when working in smallish spaces...

First, Ramset ViperII nail gun (and extension pole), for shooting up ceiling wire, etc. What store(s)/vendor(s) anywhere in the USA keep the ViperII AND extension pole in stock ? Next, Hilti caulking gun...(or any caulking gun for fire caulking). For the above-drop-ceiling situations...