I love mine. I don't know why you don't want to look at an HK site, but for pics of some of the rails/attachments, go to www.calssportingarmory.com I guess.
Umm, I've got mine set up with the rear sight rail holding an ATN Ultra Sight, then it has the lower asseccory rail on the front, with a KAC foregrip. I still can't decide weather I want it black or not.
I've got around 5000 rnds, and I can't say it's worked EVERY ROUND, because I had 3 boxes of a certain ammo that FELL APART in the mags (the bullets themselves snapped in two).
Other than those faulty rounds, it had NEVER had a failure to feed, to extract, or to fire. I've shot Wolf 230GR, Winch. 185gr and 230gr, IMI/NEWGEN 105 +p (BY FAR THE BEST, IMO), S&B 230 (2nd best I'd say) and varius other 230gr's though it. Oh, and some 165gr +p stuff.
It is EXTRAMLY accurate. I can shoot branches off of bushes and trees at 25m, usually hitting on either the 1st or 2nd shot!
I can hit a 2' wide tree 3/5 of a mile away consistantly 9 rnds out of 10. (sure, there's like 60' drop, but it's fun to do, to prove it doesn't spread more than 2' wide at that range)! It's great fun to do, 'cause with subsonic 230gr, you REALLY hear it hit!
I think it looks really cool:-). I don't like 10-rnds mags, but they are so easy to swap, that w/my 2 Uncle Mikes Tactical Drop-leg submachingun mag holders and 6 extra mags, I don't really care about the 10-rnd limit. Sure, I'd LOVE hi-caps, but the gun is such a great desing, it isn't critical. Hell, my Tac only holds 10 rnds, and I don't complain about that.
Also, it's VERY quite. About the same as a R*ger 10/22, but has no crack unless using +p ammo.
I'm rather impressed with it really. I love the Stock Iron sights as well.
Oh, I love shooting it from 100 yrds at paper targets while my friend is doing so with his scoped 30.06. He'll put a nice group ont he target, then I'll arc some 230GR down onto it, and plaster a 4-5" group over his:-). He always laughs at me arcing the rounds, but every one hits the target. With the 105 gr +p, arcing is not nessacery. . . .
I find you have to start arcing around 50m or so, it's REALLY easy to adjust as you move out though, the USC is so consistant and predictable. Oh, my sights are set for 25m as well:-).
It WAS my 1st HK. . . .
-Justin
EDIT: Oh yeah, the going rate seems to be about $1050 NIB, which is what I payed for mine a while back. Around $850-950 used. They come with a good tac sling, manual, HK multi-tool, safty cable lock and life-time warrenty, all in a cheap cardboard box!