So after much research and whatnot, I am finally getting around to ordering an M40A5 from GAP (so excited!). I've hunted before but have always bought guns straight from Cabelas or other stores so this will be the first custom gun I've even gotten. Whenever I get into to something new (reloading, etc.) I always feel like there's something I forget to get or don't think something is necessary and end up regretting it or having to buy something else extra. So, for the people who have done business with GAP or have ordered custom rifles in the past, is there anything I should know, ask for, etc.?