PTS Centurion Arms rail systems are fully licensed replica free float handguards. Centurion Arms is owned and operated by a former Navy SEAL, and these rails are designed to put up with abuse.
The Centurion Arms C4 RIS is a quad rail handguard that bolts onto the original barrel nut and is free floated for accuracy. At the base, the C4 features QD sling swivel sockets on both sides, with an additional 2 sockets at the front on this model. The locking screws are threaded into steel inserts for maximum reliability. Two anti-rotation tabs fit around the upper receiver to properly index and eliminate all play in the rail hanguard.
The 9 inch C4 rail from PTS is an ideal fit for M4 CQB barrels, or for use over the gas block on any M4. For custom builds, PTS includes a low profile gas block and replica gas tube.
PTS Centurion Arms 9 Inch C4 Rail System Features:
-Fully Licensed Design
-4 Ambi QD Sling Swivel Sockets
-Non rotating design
-Aircraft Aluminum Construction
-Includes Gas Block