I just picked up a used Bushmaster 450 upper for my lower. I have not had a chance to bring it to the range for a sight in yet. I was wondering is there anything in paticular I should check on this upper for wear or anything?
I gave it a good look over. It looks almost new on the outside. I checked the rifle bore it looked good. Also took the bolt apart and cleaned and lubed it. Thanks in advance.
Aries
![Image](http://i187.photobucket.com/albums/x100/lucianp_2007/AR450/100_2786.jpg)
![Image](http://i187.photobucket.com/albums/x100/lucianp_2007/AR450/100_2788.jpg)
![Image](http://i187.photobucket.com/albums/x100/lucianp_2007/AR450/100_2791.jpg)