Made from 4150 chromoly steel. QPQ nitride finish
A2 flash hider and carry handle.
*ATTENTION* You must own an Elite 6″ model of the FM-9 if you do not you will need the 6″ upgrade kit which includes the 4″ quad rail along with 1 barrel to modify existing 11″ or 16.5″ models. This barrel will not work on the longer quad rail that comes with the other two models.