Assuming you have all the parts your job should not take you more than a few winter. I do not see enough of a stock to use as a pattern. That might take a few hours to take care of. But think of all the joy you will have in your project. If you get bored I have a few others that I can send you. I suspect most here have a few project guns they have picked up over the years and would be happy to have others get the completed.