Okay, complete confusion here..
Is this the US KWA version, or is it the KSC version labelled as KWA?
Trying to tell if it has the steel bolt but can't tell from pics:
http://www.wgcshop.com/wgc2008/main/product_detail1.php?search_From=category&item=KWA-GBR-M4MPEM&search=category&rs=KWA%20GBBRs&catid=76&cat=635