I'm needing a little help with an upper I picked up at a funshow.  The guy said it's a Wilson.  However, per the pics on their site, the muzzle brake doesn't match.  Any help is greatly appreciated.  It shoots fine, 1.5"-2" w/Q3131a, and no jamming (since I added a heavy buffer).  With the price I paid, I'm not hurt.  I'm just kind of curious.

Details:
14.5" barrel w/perm muzzle brake
FSB is marked F (RI) 1   [RI is in a circle]
the barrel is a M4 profile and lite under the handguards
there are no markings on the barrel, but the first 3"-4" are polished blue instead of matte  

Pics added.  Thanks in advance for the help.

http://i11.photobucket.com/albums/a199/vickery397/IMAG0067.jpg

http://i11.photobucket.com/albums/a199/vickery397/IMAG0068.jpg

http://i11.photobucket.com/albums/a199/vickery397/IMAG0069.jpg

He probably tried to have you believe it was a Wilson Combat...it's not.  Wilson Arms produces the barrels for RRA.  That looks like it was a RRA HBAR M4 barrel, that someone had turned down under the handguards and looks like it has a KKF long A2 flash suppressor on it.  

It's not a Wilson Combat, but don't worry, unless you paid a bunch, you didn't get hosed and this should be a fine upper.

Outstanding guys.  Thanks for the help.  I picked it up for $225 without b/bc/ch, and it shoots fine so I'm happy.  This was part of my first AR.  I was trying to put one together on the cheap for a patrol rifle.  Once I figured out that it needed a "h" buffer to cycle properly, I've been very happy with it.  Thanks again for the help.