I have a Bushmaster A2 20" 'Target Model' upper, in post-ban configuration, for sale. Full specs can be viewed here: http://bushmaster.com/shopping/uppers/post-ban/pura2b20.asp
There are light marks on the carry handle from the scope mount, and on the charging handle, from the Tac-Latch installation. Overall, I would put it at 99% condition. 50 rounds of Black Hills 69grain is all that has been fired through it.
Includes original BM bolt/carrier/charging handle with Tac-Latch.
Asking 400.00, shipped to the lower-48. New from BM costs you $535, plus shipping, with no Tac-Latch.
Email me at email@example.com, or IM, with any request for pics.