SECOND LIFE - MP9 A3 TAN GBBRMP9 A3 Submachine Gun Replica An MP9 replica made on a B&T license is a true representation of the original B&T MP9. As is the case in the live firearm, the receiver of the replica was made from polymer. Thanks to its mat, anti slip texture the replica fits well even in a wet or muddy hand. The outer barrel, stock, magazine and lock were made from metal. The replica is equipped with three RIS rails. The longer rail has 160mm, shorter ones 70mm each.