The USW Up grade Chassis has an built-in typical Picatinny accent rail for a light-weight/laser as well as folding stock. It is still ambidextrous in dealing with, While using the ambidextrous slide capture lever and reversible magazine capture. The folding stock folds on to the best side of the weapon, https://m14alcs29392.digiblogbox.com/52366837/everything-about-b-t-stock-conversion-kit