I am selling a Pre ban A3 upper minus the bolt and charging handle. It has a A.R.M.S #45M SIR system, an A.R.M.S #40 flip up rear sight, a 16" m4 barrel with an A3 birdcage flash hider, and an A3 upper receiver. The upper is a bushmaster upper. This has never been fired, bought it as a project and ran out of money.
e-mail me at firstname.lastname@example.org, if you would like pictures or have any questions.