BTMS AR15 M4 One Piece Offset 30mm Scope Mount with Accessory Rails Picatinny Weaver Base ReviewbP PP TMS AR15 M4 One Piece Offset 30mm Scope Mount with Accessory Rails Picatinny Weaver Base POne piece offset design for better scope alignment and easier eye relief setupPIntegral accessory rails for mounting laser sight, flashlight and backup sightPFits onto Weaver and Picatinny railsP35mm center heightPGreat for use on AR15 M4P