Fortis low profile gas block is designed to work in conjunction with today's match grade barrels.  Don't want to mar your barrel installing the gas block?  Neither do we!  So rock this new gas block and put those concerns to bed.  The Fortis LP gas block is designed for .750 gas seats and attaches to the barrel with two set screws.  The gas block comes with a roll pin as well as two set screws.

Features:

Two set screws
4140 steel
Made in America