The Packaged – AM-15 Gas Block, Adjustable – .750 comes in our new retail packaging to better gift to others for Holidays, Birthdays, or Other Special Occasions! Also allows dealers to hang our products in store! The AM-15 Adjustable Low Profile Gas Block Assembly is made here in Hebron, KY, USA. This Gas Block is made from 12L14 Steel with a Nitrite finish and is compatible with a .750 dia Barrel. Roll Pins, Set Screws, and Allen Wrench are included with this gas block. Allows for 20 points of adjustment from gas port closed, to fully open. Gas block in closed position allows for single shot operation-bolt remains in battery.