The manganese phosphated finish provides enhanced corrosion resistance and durability, protecting the metal surfaces from wear and tear
The phosphated area under the front sight base enhances corrosion resistance in critical areas, promoting long-term reliability
Taper pins on the F-marked front sight base ensure secure attachment and maintain alignment for reliable performance
The threaded muzzle allows for easy attachment of muzzle devices or suppressors, enhancing versatility
The M4 profile combines strength and weight efficiency, making it a popular choice for performance-focused builds
The phosphated 8620 steel carrier assembly enhances durability and corrosion resistance, ensuring reliable operation
The Carpenter 158 bolt is high-pressure tested (HPT) and magnetic particle inspected (MPI), guaranteeing strength and reliability
The heat-treated and plated bolt and carrier provide increased durability and resistance to wear, ensuring long-term performance
The Mil-Spec bolt and carrier assembly is designed for reliable function and compatibility across various AR-15 platforms
A chrome-lined carrier interior enhances reliability and eases cleaning, ensuring smooth operation over extended use
The carrier key is chrome-lined and securely attached with Grade 8 screws, promoting durability and effective gas sealing
Properly staked and sealed gas keys ensure a reliable gas system, preventing any gas leakage and maintaining consistent performance
The carbine length handguard provides a lightweight and compact option while allowing for effective accessory mounting
An aluminum delta ring handguard offers enhanced strength and a secure fit, ensuring durability during rigorous use
The single heat shield in the handguard protects against heat transfer, providing a comfortable grip during extended shooting sessions
The forged 7075-T6 aluminum upper receiver delivers superior strength and durability, making it a reliable choice for any AR-15 build
The A3 flat-top with M4 feed ramps upper receiver provides a versatile platform for mounting optics while ensuring reliable feeding
A hard coat anodized upper receiver offers increased corrosion resistance and a rugged finish that withstands wear
This Mil-Spec upper receiver meets industry standards for compatibility and durability, ensuring reliable performance
Equipped with an ejection port cover and round forward assist, this receiver is built for durability and smooth cycling
Right hand ejection ensures consistent and reliable casing ejection, keeping the shooter's area clear during operation
The bore's surface is coated with dry film lube over the anodized surface, providing enhanced lubricity for smoother cycling

Features

This 16 inches Pre-Ban M4 barrel assembly features a robust 1:7 twist rate, designed to stabilize a wide range of bullet weights, making it ideal for various shooting scenarios. Constructed from chrome-moly-vanadium (CMV) steel and chrome-lined for enhanced durability and corrosion resistance, this barrel is built to withstand rigorous use. The assembly includes an F-marked front sight base, ensuring proper alignment and functionality when paired with a flat top upper receiver. M4 feed ramps enhance reliability during feeding, contributing to smooth operation in any environment. Additionally, the assembly comes equipped with a high-pressure tested (HPT) and magnetic particle inspected (MPI) tested bolt, ensuring consistent performance and reliability. This barrel assembly is a solid choice for shooters looking to build a high-quality, reliable AR-15 platform.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.