I just got an email from Liemohn manufacturing that they are in the process of machining XM607 and XM177 moderators.

They told me they are going to make the 607 and 177  moderators in NFA versions as well.

The XM 177's can be had with a grenade ring and the proper lock washer.

No official pricing was given, however I was able to secure one each when they are finished. They also told me engraving will be an option on the non NFA versions with serial numbers for replica purposes.

When they email me with official pricing and I have both units in hand I'll post pictures of these for you guys along with what they are asking for these.

Looks like there is a price for the XM177E2 mod>http://www.sturmgewehr.com/webBBS/parts.cgi?read=346940

Cool! They aren't too far from me. No form 3 or transfer fees! I'd be interested in an NFA 177type.

I will stay tuned for info.

Very cool! it will be interesting to see what route they go for the non-NFA ones in terms of design. Obviously solid is the easiest but from a weight perspective it may not be the best for the end user.