got one of the brand spankin new MI scar rail extensions. its hot off the presses today. no one else has one of these MI units. its also now sporting one of the vltor buttstocks!! main reason i got it is for the qd sling swivel. it also has a storage compartment and a much better angle for the shoulder pad. for the added utility and versatility its 4 ounces heavier net after installation. with the 1 ounce savings on changing to vltor stock i only added 3 ounces to the rifle!! color doesnt match because i havent oiled the extension it will change to match once it gets a bit of oil. HOWEVER.... like anything else i do, if there is a flaw it will be with the one i get. the torque required to snug down the barrel screws is 60 inch pounds. MI suggests 62. my fat wrench only goes to 60 so i stuck with the fn rating. the new mi yoke mounting holes for the barrel stripped out so its back to MI tomorrow. ill update with the results. im sure they will fix it. i am pretty excited about this rail since the main issue i had hunting was every rest i found for observing through the scope comfortably want to rest on the exposed barrel. this extension is the perfect solution.