This is a factory-made complete Bushmaster upper half, with a fluted 16.1" Dissipator barrel and a standard A2 flash suppressor and no bayonet lug (the Dissipator design does not allow bayonets to be mounted anyway). To make this upper legal for a post-ban rifle, you could install any of several post-ban legal muzzle brakes, which would need to be permanently attached. Kurt's Kustom, Cavalry Arms, Wilson Combat, and others can supply one to you. The current A2 FS is not permanently attached, and can be easily replaced with any standard 1/2-28 threaded muzzle device.
Like all standard Bushmaster barrels, this one is made with 4150 ordnance steel, is fully chrome-lined, and has a 5.56 NATO (i.e., M16-spec) chamber to provide reliable function with hot-loaded military ammo. I’ve tried to get a decent picture of the barrel so you can see the fluting detail.
The upper is complete with A2 upper receiver, bolt/carrier assembly, charging handle, and full-length handguards, ready to be dropped on your lower and fired.
This upper is being sold as USED, but is in 98% condition with approximately 600-800 rounds through it. I’ll offer a 3-day inspection period from the day you receive it to ensure that it’s as advertised. If you are unhappy with it during that time, return the upper to me (email me so I know that you’ve done so) and I’ll give you a refund minus shipping costs.
New from Bushmaster, this upper costs $585, with a typical wait time of several months at least due to the fluting. I’m asking $525, plus $15 for insured UPS shipping to the lower 48. I can ship via other methods on request (please email for a quote). I accept PayPal (add 3%), postal money orders, or personal checks (10 day wait to ensure check clears).
Please email me if you have any questions.
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