BROWNELLS - BRN-4 HK416 Combination Wrench

BROWNELLS BRN-4/HK416 COMBO WRENCH

The Brownells BRN-4/HK416 Combo Wrench is a compact, multi-function armorer's tool designed to handle the most common assembly and maintenance tasks associated with BRN-4 and HK416-pattern rifles. Combining multiple essential wrench functions into a single rugged tool, it provides a convenient solution for armorers, builders, and firearm enthusiasts working on compatible rifle platforms.

Designed as an all-in-one maintenance tool, the wrench incorporates dedicated interfaces for castle nuts, barrel nuts, and flash hiders, while an integrated 1/2" drive opening allows use with a torque wrench for precision assembly operations. Its compact design makes it easy to keep on the bench, in a toolkit, or in a field maintenance kit without sacrificing functionality.

Constructed from hardened steel for strength and durability, the BRN-4/HK416 Combo Wrench is purpose-built for compatibility with Brownells BRN-4 components, many HK416 variants, and select Geissele barrel nut and handguard systems.

FEATURES

• All-In-One Armorer's Wrench Design
• Integrated Castle Nut Tool
• Integrated Barrel Nut Tool
• Integrated Flash Hider Tool
• 1/2" Drive Opening for Torque Wrench Use
• Compatible with Brownells BRN-4 Components
• Compatible with Most HK416 Generations
• Compatible with Select Geissele Barrel Nuts and Handguards
• Compact Design for Bench or Field Use
• Hardened Steel Construction
• Integrated Bottle Opener
• Made in USA

SPECIFICATIONS

• Brand: Brownells
• Tool Type: Combination Armorer's Wrench
• Finish: Black Oxide
• Material: Hardened Steel
• Overall Length: 4.81" (12.2 cm)
• Overall Width: 2.66" (6.8 cm)
• Drive Interface: 1/2" Square Drive

COMPATIBILITY

• Brownells BRN-4 Uppers
• Brownells BRN-4 Lowers
• Brownells BRN-4 Barrels
• Most Generations of HK416 Rifles
• Select Geissele Barrel Nuts
• Select Geissele Handguard Systems

The Brownells BRN-4/HK416 Combo Wrench delivers the essential tools needed for maintaining and assembling BRN-4 and HK416-pattern rifles in one compact package. Featuring castle nut, barrel nut, and flash hider functionality, along with a 1/2" drive interface for torque wrench use, it is a practical addition to any armorer's bench or rifle builder's toolkit.