Jarrod, I plan to ship my pre-ban upper receiver assembly to Bushmaster so that you can replace my HBAR barrel with an A2 govt profile barrel. Does it make sense for me to ask you to re-use the original parts off the old assembly, such as A2 flash suppressor, crush washer, delta ring, handguards, and gas tube? Or would it be better to have you remove the entire HBAR assembly and replace it with an entire new A2 govt profile barrel assembly? I'd like to do this project as inexpensively as possible, hence my desire to re-use the old parts. However, if there is a good reason not to re-use the old parts, then I want to know that also. I would hate to be "penny wise and pound foolish" about this project. Thanks, Mike.