Ballistic Advantage AR-15 Low-Profile Gas Block Features The Ballistic Advantage Low-Profile Gas Block is machined to fit an .875 inch barrel journal a common sizing for mid and government profile AR-15 barrels running a free float handguard system. The low-profile design keeps the block tucked beneath the handguard giving the rifle a clean streamlined appearance while protecting the gas block from impact and snagging. A Melonite finish provides excellent corrosion and heat resistance standing up to the high temperatures generated at the gas block location during sustained firing. This finish also reduces friction helping keep the gas system running cleanly over the life of the rifle. Made in the USA this gas block reflects Ballistic Advantage s reputation for producing AR components that meet demanding standards for reliability accuracy and fit. The gas block is sold without a roll pin so builders will need to source that small component separately during installation. Ballistic Advantage parts are known to exceed competitors in both precision and the quality of their finishing work making this gas block a dependable choice for a build or a replacement part. For AR-15 builders needing a proven low-profile gas block this Ballistic Advantage component is available for sale at GrabAGun. Ballistic Advantage AR-15 Low-Profile Gas Block Specifications Manufacturer: Ballistic Advantage Model: Low-Profile Gas Block Compatible Hosts: AR-15 Color: Black Finish: Melonite Fit: .875 Barrel Available At: GrabAGun