A buddy at the PD has a Surefire Mdl 511A Rifle length handguard / weapon-light he wants to unload for funds. He is asking $250 - $275. I can provide info for interested parties and have him contact you directly. I believe it's a Colt type for triangular handguard plates. I'll confirm that with him.
The picture shows a black anodizied light system. His system is a mil-spec hard anodized mellinium series.
I'll get his email address and add it to this thread.
Edit: you can try firstname.lastname@example.org or email@example.com and I can forward it.
He's interested in trades. He's getting an M1A Socom (yeah, I hate him too) and he'll need ammo. He also needs an Eotech or similar optic.