i have an ar15 sbr. i am thinking about getting a different style sbr and in order to have the funds need to sell this one. anyone have experience with selling sbr's? should i just part out everything and keep the stripped lower receiver and keep the stamp on it so if i ever decide to go back i can? it seems selling the whole rifle would be a hassle and a wait, plus it is engraved and i doubt anyone would want it as such. what say you more experienced folks?