i did apply for a patent.. (not on a gun part)... & Greg Clark has actually gotten a couple.
IF you have something that can go commercial & be profitable? sure! go for it.
if not? its all about how much you need the cash you spend ot get it just for bragging rights.
a good patent lawyer to do the legwork isnt free.
lots of people say you can do it on your own by yourself.. im sure some of the people here can, but for the average joe out here on the net? you need help to set it up where its worth more than the paper its printed on.
lots of self submitted patent applications end up being useless or worked around by someone else...