There seems to be a lot of confusion about the weapon the Dallas shooter used. The things I see and maybe others want to take a look is an AK 47 flash hider on this weapon in the pic and if you enlarge the pic it appears to me there is the original cover on the charging lever which means it has not been used.
The whole weapon especially the scope just appears too pristine to have been in a terrible explosion. I think its extremely suspect as to whether this was even the real weapon.
Who knows?