Just WOW. The OP asked about recommendation about a gun. He wasn’t asking about how to handle his ex-wife or his relationship with his son or anything else in his life for that matter. You are way off base.
It is hard to believe from your comments that you are prior military. Attorney, yes military not so much.
what, because I am prior military I would put getting a gun in front of preservation of the family relationship? You must never have gotten past PV1.
Yeah, I was an Army officer on active duty. Yeah I am also a mother. I can tell a manipulative narcissistic move when I see it and that is what this “father” is doing, under the pretext of getting his kid a gun.