Brownells Brn-4 Bolt Carrier Group, Phosphate Chrome

Experience unrivaled performance and reliability with the Brownells BRN-4® Bolt Carrier Group, meticulously crafted to enhance the functionality of your BRN-4 or serve as an exceptional replacement for MR556 or 416 rifles. This enhanced bolt carrier group is built for shooters who demand the best from their firearms. With its combination of manganese phosphate carrier and chrome bolt, every component of this unit is designed for optimal performance under high stress conditions. Whether you are a competitive shooter, a law enforcement officer, or a dedicated hobbyist, the BRN-4® Bolt Carrier Group ensures that you have a dependable companion in the field.

Imagine the confidence that comes from knowing your firearm is equipped with a beautifully finished, robust bolt carrier group. The chrome bolt promises effortless cleaning, providing a sleek and gleaming appearance that stands out at the range. More than just aesthetics, the phosphate-finished extractor is engineered for superior grip on brass, guaranteeing reliable and consistent extraction—an essential feature for dynamic shooting scenarios. Feel the difference in your shooting experience, as the robust construction allows you to fire at sustained rates without compromise, ensuring that your focus can remain on target, shot after shot.

Designed with precision and intended for the most discerning users, each aspect of the BRN-4® Bolt Carrier Group delivers on durability and performance. The hardened manganese phosphate carrier is built to withstand the extremities of heavy usage, making it an ideal choice for full-auto configurations while the enlarged tail of the carrier mitigates tilt from piston impacts. These thoughtful enhancements make it a vital upgrade for anyone seeking top-tier reliability in their rifle’s operation.

Whether you are in the heat of competition or enjoying a day at the shooting range, trust in a product that combines old-world craftsmanship with modern innovation. The Brownells BRN-4® Bolt Carrier Group is not just an upgrade; it’s a commitment to excellence that allows you to channel your passion for shooting with precision and confidence. Elevate your firearm's performance and feel the difference with every shot fired, allowing your passion for shooting to reach new heights!

Key Features

• Manganese phosphate carrier for enhanced durability
• Chrome bolt and cam pin for easy cleaning
• Enhanced extractor with phosphate finish for reliable extraction
• Enlarged carrier tail to prevent tilting under piston impact

Technical Specifications

What's in the Box

• BRN-4® Bolt Carrier Group
• Extractor Spring with Black Insert
• Extractor O-Ring
• Firing Pin
• Firing Pin Spring
• Firing Pin Retaining Pin

Compatibility & Requirements

• Compatible with BRN-4, MR556, and 416 upper receivers

Dimensions & Weight