Take off the stock and add a Galil style folding stock... not a Crapco one, an ACE folder.
Also you might want to invest in getting a more "Galil" style muzzle brake. All the ones I have seen on Galils look a little like birdcage style ones, only longer and without the 22mm groves. The one on there now looks like an early 4 slot M-16 flash hider.
Finally, might want to blue it darker.
Of course, all of these are rather minor things. The gun is awesome, 100% keeper.