Pancho,
Unless you are dead set on building it yourself, I would consider AA's 14.5" upper (which has a pinned flash hider to make it 16.1"). It's not SS, and is chrome lined.
I'm not sure I'd use an AR in an apartment...I'd go with a shotgun with minimum sized barrel length (18" I think). They aren't too expensive. In that case, I would get a Grendel setup with the 18" barrel/bolt combo in SS, fluted, for my AR needs.
Mid length h/g with mid length gas will fit behind gas block...no low profile req'd.
Unless you are dead set on building it yourself, I would consider AA's 14.5" upper (which has a pinned flash hider to make it 16.1"). It's not SS, and is chrome lined.
I'm not sure I'd use an AR in an apartment...I'd go with a shotgun with minimum sized barrel length (18" I think). They aren't too expensive. In that case, I would get a Grendel setup with the 18" barrel/bolt combo in SS, fluted, for my AR needs.
Mid length h/g with mid length gas will fit behind gas block...no low profile req'd.