Although a vast majority of my Colt collecting involves new or like new and complete items, I like to buy used items periodically when I get an opportunity.
Any used items that I buy get inspected for function, correct part content and gets cleaned/oiled/greased as applicable.
This carbine buttstock is an example. It came with a small group of carbine lower receiver parts. It will get the adhesive labels removed, the GG&G sling swivel removed (it will go on Ebay) and will get cleaned up.
This buttstock is also missing the sling swivel and retaining screw so those parts will get ordered. The refurbished/corrected carbine buttstock assembly then goes into my parts inventory.