I have 2 300 BO caliber pistol uppers for sale. No BCG or charging handle. I do not have the maker. I haven't looked any of them up, but you can make an offer. I'll do a little leg work after an offer is made, and if fair, we will meet. I do live 45 minutes south of Houston. Pick up will be done in Lake Jackson at a local retailer. I don't always get messages pushed so I will check at least daily and respond.