Ballistic Advantage .875 Low Profile Gas Block – AR-15 Platform

The Ballistic Advantage .875 Low Profile Gas Block is a precision-machined component designed to regulate gas flow in AR-15 rifles with .875-inch journal barrels. This low-profile design sits flush under most free-float handguards, eliminating the bulk of traditional front sight blocks while maintaining reliable gas system operation. Upgrading to this gas block allows for uninterrupted sight picture with optics and provides a cleaner barrel profile for modern rifle builds.

Machined from steel with a black nitride finish for corrosion resistance and durability, this gas block features a set screw attachment system for secure installation. Installation requires proper alignment and timing—shooters comfortable with basic AR-15 assembly can install this as a drop-in component, though professional installation is recommended if replacing a pinned front sight block or if unfamiliar with gas system timing.

• Part Type: Low Profile Gas Block
• Compatible Firearms: AR-15 platform rifles with .875-inch diameter gas journal barrels
• Material: Steel
• Finish: Black Nitride
• Installation: Drop-in for experienced builders; professional installation recommended for gas system conversions
• Includes: Gas block and set screws