must confess my opinion about the Heckler&Koch SL 770 have change over the time. maybe 20 years ago I hate this self loading rifle but now I am not sure anymore.
this one with a another pistol grip cap and a classic butt plate will be worthy a discussion.

http://egun.de/market/item.php?id=5317033&PHPSESSID=478ea3447b85e5a71a4fb4e1d52c662f#img

most times in live its not the gun but the ugly clothes