Zardoz,
I would skip the RAS and go with a SIR. I was originally going to get a RAS but after checking around I found the SIR #50 for about $50-60$ more than the RAS! I feel the SIR will give you more options and it's free floated too!
Combat-Jack (I love your handle! LOL [:D])
Why won't your SIR fit? Was the upper reciever rails not lining up properly or the barrel nut yoke not fitting? Have you talked to CMMG and asked if they could fix it?
My SIR 50 slid right on the receiver, the barrel nut yoke was tight but I believe that's how it's suppose to be, other than that it was a 5 minute job. I hope you get your problem resolved. Either way keep us posted and let us know how it works out.
naloxone,
The 552 works really well out front. I've done a few house clearing walk throughs with the 552 on the receiver and on the SIR and it really is better forward mounted.
Yes, it does feel a bit front heavy but it's not that bad at all. I'm sure a vertical grip will make almost unnoticeable.
FeedingCannibal,
Where are you getting your SA surlpus? I thought these were hard to find and over priced at this time. I'm currently down to 500 round of XM193 so I'll be needing more ammo soon! [:D]
BTW, where do you get the BH 77gr. SMK and how much did it cost for a box?
Later guys!
-Chris