The Samson Armory sells high quality gun accessories for sale and extensive inventory for ar-15 accessories . One of our top selling products is AR-15 gas block which is imperative to a well-operating firearm. Buy one of our AR-15 gas blocks sold by one of the trusted brands Bravo Company . The Samson Armory offers low profile, adjustable AR-10 gas blocks, or one that doubles as a front sight. The gas block has the unique responsibility to regulate gas from the round back into to the bolt carrier group; this is what ejects empty cartridges and feeds the next round.