Heads up. The new model XCR's with tooless gas blocks are shipping. I saw two at getsomeguns LLC in SLC Utah
$107 plus shipping is correct if you send it to them they will do the install for $25 plus S&H.Yes, these guns have 5 settings, one of which is designed for supperssor use, Very exciting (for me anyway!)
The parts kits will be avaliable when they catch up after putting them on all the new guns. I think the quoted price for the kit will be 7.00 plus shipping.
Lex this is from RA web site, not a complete answer but it may help. A soft jawed vice and some small