“The Best Upper $$ Can Buy! The Handguard has an Outstanding Eggshell Finish, Not too shiny, Not too Dull. The Bolt Latch has an Allen Wrench screw instead of a roll Pin so it is much easier to upgrade the latch and the proprietarily indent pin can remove any slack between the upper and lower making the connection between them tight and secure should you need to snug them up. Mine didn't need any adjustment at all, and was snug as a bug in a rug!!”