Firearm Parts Reviews

Stag 15 M4 Upper Receiver – Elevate Your AR-15

When it comes to the AR-15 platform, there’s a timeless appeal to the classic M4-style configuration. It’s a design that has stood the test of time, serving on battlefields across the world. Now, you can bring that iconic look and functionality to your AR-15 with the Stag 15 M4 Upper Receiver by Stag Arms.

Stag 15 M4 Upper Receiver

Military-Proven Performance

The Stag Arms Stag 15 M4 Upper Receiver is a true GI-spec system, offering you the same features and reliability as the M4 Carbine used by our military for decades. Let’s take a closer look at what sets this upper receiver apart:

  • Chrome-Lined Barrel: The 16-inch barrel is chambered in 5.56 NATO and features a chrome-lined bore and chamber. This chrome lining provides excellent corrosion resistance and ensures longevity, even under harsh conditions.
  • Twist Rate: The barrel comes with a 1:7-inch twist rate, which is ideal for stabilizing a wide range of bullet weights, making it versatile for various shooting applications.
  • Classic M4 Design: The Stag 15 Upper Receiver faithfully follows the M4-style design, including the iconic front sight tower and handguard cap. It’s perfect for those who appreciate the aesthetics and functionality of this classic configuration.

Whether you’re building a new AR-15 or upgrading your existing one, the Stag 15 M4 Upper Receiver brings military-proven performance and style to your firearm.

Upgrade Your AR-15

Transforming your AR-15 into an M4-style carbine has never been easier. The Stag Arms Stag 15 M4 Upper Receiver is a drop-in solution that brings the classic look and performance to your firearm. Whether you’re a collector, enthusiast, or a shooter looking for a reliable platform, this upper receiver delivers.

Don’t settle for less when you can have a piece of military history on your ar-15. Upgrade to the Stag 15 M4 Upper Receiver and experience the difference.


The Stag Arms Stag 15 M4 Upper Receiver is your ticket to elevating your AR-15 to a classic and battle-proven configuration. With a chrome-lined barrel, versatile twist rate, and M4-style design, it brings military-grade performance to your firearm. Upgrade your AR-15 today and experience the timeless appeal and reliability of the M4-style carbine.

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