This BT Mag is made from composite plastic with a weaver style adapter.  This two piece design features a mag kit and mag well.  It's not only durable and stylish but works with most paintball guns that have available bottom weaver/picatinny rail space.  Working mag release button enables you to detach the mag from the magwell!!  Top adapter measures about 3 7/8" in length.  Overall length of mag is about 6 1/2".