There was a time when the VLTOR CASV Modular Free-Float Handguard was a favourite upgrade part for M4 AEG owners. Now, we get to see one installed on an E&C AEG, but this is not a replica CASV from King Arms or any other China-based accessories and parts maker, but  a genuine VLTOR CASV that fits the real steel AR. Vincent of Toronto Airsoft shows you his custom build in this video.