LBE Unlimited AR-15 Low Profile Gas Block .750 with Mid Length Gas Tube

A .750 low profile gas block that comes with the mid length gas tube already installed, so the guessing and the second order are both off the table. The block is steel with a nitride finish, and the profile is low enough to disappear under a free float handguard instead of pushing the rail up a size.

The gas tube is stainless, which is what you want in a part that spends its life full of hot gas and never gets cleaned. Mid length gas is the setup on most 16 inch AR-15 barrels, and it runs softer than carbine gas because the pressure has more barrel to bleed off before it reaches the port. Confirm the journal on your barrel measures .750 before ordering, since gas block fit is not something you can shim your way out of.