Please Help Me Before I Lose My Mind : Ics CXP Peleador C

[LiamT]

So I have been looking around for a while with my current ICS CXP Peleador C, sportline the polymer one, so I want to change out the front free floating rail to a RIS style rail, but how do I switch from a free floating rail?? the current has two screws underneath the rail system that hold it there, in front of the mag well, I was going to spray my ICS rail system as it is blue but I thought I might as well jump to a metal rail system, but I like the asthetic of the RIS style. IF ANYONE HAS EXPERIENCE in these ICS systems please help me out here as I would love to know  

 

[BigStew]

ICS tend to be proprietary for their parts easiest way would be just to buy a new upper receiver.