Narrowed down my search for some type of extended hand guard system to the following: Weight added to Rifle Factory Sling Mount Retain Factory Front Sight Allow piston removal for cleaning Price M.I. SCAR Keymod Rail Extension 6.8 oz. Yes Yes Yes $219.95 VLTOR SCAR KeyMod Handguard...

I just installed the rail on my Gen 2 PS90 and must say I love it. I was debating the light hanging from the side but saw some threads here with this rail and thought I would try it and I am glad I did. Plenty of room for several different configurations.