BCM M4 Upper Receiver Assembly

The BCM M4 Upper Receiver Assembly is built to exacting Mil-Spec standards, providing superior strength and accuracy for the most demanding users. Precision machined from 7075 T6 forgings, this upper receiver is designed for enhanced durability, making it ideal for rough handling and malfunction clearance drills.

Key Features:

• Tighter Barrel Fit: The inside diameter of the receiver’s barrel extension is slightly undersized for a tighter fit, ensuring improved accuracy. If the barrel extension is too tight, simply warm up the threaded bore using a heat gun or hair dryer for easy installation.
• Precision Machined 7075 T6 Forgings: Manufactured to Mil-Spec standards, offering superior strength and reliability.
• Fully Assembled: Comes equipped with a forward assist and ejection port cover, ready for immediate use.
• Mil-Std 1913 Rail: Allows for easy mounting of optics and accessories, providing versatility and customization.
• M4 Barrel Extension Compatibility: Specifically machined to work with barrels using an M4 barrel extension.
• Laser Etched T-Markings: For quick and easy remounting of optics, ensuring repeatability.
• Mil-Spec Forward Assist: Features a heat-treated tool steel pawl with a press-fit and pinned cap for enhanced durability.

Specifications:

• Finish: Hard coat anodized to Mil-A-8625F, Type III, Class 2 standards for maximum durability.
• Dry Film Lube: Interior bore is coated with dry film lube per Mil-Specs, ensuring smooth operation.

As with all BCM® products, the M4 Upper Receiver Assembly is proudly made in the USA, delivering top-tier performance for military, law enforcement, and civilian use.