1st time makeing a speargun Help!!!

[Hapa4Lyph89]

This is my first time building my own gun. I laminated two peices of oak on both sides of a piece of walnut. The stock is 48". I also made some wings out of bloodwood and mahagony. I purchased a riffe orignal kit. I was wonderning if it is better to install all the "guts" before coating the stock with Epoxy, or vice versa. Also, the kit did not come with any instructions so for anyone willing to give me some tips that would be greatly appreciated.

[Bjordnolf]

Do all of the guts and whatever else first the epoxy is the final step.
thanks