This is the OPMOD Limited Edition made for Optics Planet. It an 2010 model but still works great just making room for the Trijicons I been upgrading to. I can toss in a few extra batteries as well. Asking $250 shipped. I live in Florien, LA. I take PayPal, CashApp, Facebook Pay.
I use a cop that does this in his spare time from a company named, Thin Red Line Performance Coating. He's pretty quick, reasonable on price and willing to take on weird stuff.
https://www.facebook.com/thinredlineguncoating/
I like it. SBS M4's are the best M4's. Agreed on ditching the Surefire M80 rail. I'd go back to the OEM handguard and have them stippled by Tango Arms. If you need the US part, get the FFT reproduction set. They can be stippled as well. I'd throw a carriercomp 5 round titanium tube on it to cut some front weight. Add the A&S trigger frame and maybe add the Scalarworks Sync rail with a RMR, then maybe ditch the iron sights completely to declutter the sight picture. Then drop a Surefire M600IB or M600DF light on the IWC mount.