I went the MagPull handguard route and was very disappointed. It was a loose fit after I used it a while. So much for that one. Next.....let's spend a few more $$ and try a Troy.
This particular model from Troy was the 7" CAR/M4 Drop-In BattleRail. It is a quad rail mil-spec M1913 Picatinny rail. It also accommodates the push button quick disconnect swivel. It is a two piece handguard that installs in the normal fashion. It does have 4 screws to ensure the upper and lower halves are securely mated. It is not a free float handguard. I picked up a set of MagPul polymer ladders which fit the rails very nicely and made for a comfortable grip. I left a portion of the bottom rail exposed for attachment of the Grip-Pod when needed.
