Airsoft Outlet NW have sent over details of the new PTS Centurion Arms rail systems:
PTS just released their new licensed Centurion Arms rail systems, and these are extremely impressive. Two styles are available, including the C4, which is a free float quad rail, and the CMR, which is a modular rail handguard.
The Centurion C4 comes in two lengths, the 7 inch Carbine and the 9 inch Midlength. Both of these are designed to lock onto a GI barrel nut with the delta ring assembly removed. This allows the rail to upgrade any M4 or AR15, without needing a proprietary mount.
http://www.airsoftoutletnw.com/news/pts-centurion-arms-c4-cmr-rail
