Brownells BRN-4 416 Type Gas Block Black Nitride

Description

Product Overview

The Brownells BRN-4 416 Type Gas Block is a replacement gas block built for 416 type barrels and firearms using a 14.5 in / 16 in gas-block location. It is machined from billet 4140/42 steel and finished with a hard black nitride coating for long service life under demanding use. The internal piston-head interface is carefully machined and honed for smooth operation, and the rear alignment tab helps ensure consistent alignment for proper gas flow.

Key Features

• Machined from billet 4140/42 steel for durability under heavy use
• Black nitride finish for a hard, lubricious surface
• Honed interior for smooth piston-head operation and reduced roughness
• Rear alignment tab supports repeatable alignment for correct gas flow
• Designed for 416 type barrels and gas block journals only
• Requires 416 type coil pins for installation

If you are building or maintaining a 416 pattern setup, the BRN-4 gas block is a purpose-built replacement designed to match the correct barrel interface and alignment.