I have one 20" upper. It is a Bushmaster A3 flat top upper, 20" chrome-lined heavy barrel, 1X9 twist. It has an aluminum free float handguard. The barrel started life as a post-ban 20" and I threaded it 1/2"x28 TPI (standard AR threads)to accomodate a customers needs, however the customer never followed through with the deal. It comes with an A2 flash hider. There is no bayonet lug on the front sight housing. If you want to put this on a post ban rifle, a muzzle brake can be permanently attached.
No carry handle, bolt, or bolt carrier is included. The A3 upper includes the forward assist and ejection port cover. It is assembled and ready to go on your rifle.
The upper assembly is new, and was only tested for function (ten rounds).
Pictures available upon request. Please e-mail me at email@example.com with any questions or offers.
I'm asking $300.
Magnum Gunsmithing, Ltd.