Has anyone had their MINI-14 barrel cut down to minimum legal length, properly crowned, and had the factory sight re-installed (without installation of a muzzle brake or flash suppressor)? If so, did you notice any improvement in accuracy? Also, was the factory sight re-pinned on or was it silver soldered? I see a lot of posts about cutting the barrel down and installing a muzzle brake but none about retaining the factory sight only. I have a Colt Match Target with a lightweight 16" barrel (no muzzle brake or flash suppressor) and wish to duplicate the same for the MINI. All inputs will be appreciated.