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Prime Time To Build Sale - Take 15% Off Gun Parts w/ Code PRIME15 - SHOP NOW

Prime Time To Build Sale - Take 15% Off Gun Parts w/ Code PRIME15 - SHOP NOW

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$1,529.99 - $1,629.99
Coupon Code PRIME15
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Brownells has paired up the Daniel Defense 14.5” M4A1 RIII Upper Receiver with your choice of EOTech Red Dot EXPS2-0 or EXPS3-0.

Adding to their extremely successful line of stripped M4A1 uppers, Daniel Defense now has the stripped M4A1 upper with their RIII rail! This stripped M4A1 AR15 style Upper Receiver Group is built around a 14.5 inch Cold Hammer Forged M4 Profile barrel and a mid-length gas system. It features a 12.5 inch lightweight RIS III rail—modeled after the revolutionary RIS II two-piece handguard developed for SOCOM—features M-LOK attachment for lighter weight while still offering M203 grenade-launcher attachment.


UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized

BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 14.5" Government Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested

GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 Hardened Steel with Mil-Spec Heavy Phosphate Coating, Mid-length, Direct Impingement

HANDGUARD: Daniel Defense RIS III 12.5, Patented, 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum

Made in the USA!

Please note that these stripped upper receivers are test fired at the factory. As such they will show slight wear and fouling and may have the appearance of being lightly used.

DOES NOT INCLUDE: Bolt Carrier Group, Charging Handle and Muzzle Device

When it comes to performance and precision, the EOTech® EXPS2-0 stands in a league of its own. Designed to meet the demands of tactical professionals and avid shooters alike, this holographic sight is the epitome of cutting-edge technology and rugged reliability.


Unparalleled Clarity: Experience crystal-clear optics and rapid target acquisition with the EXPS2-0. Its true holographic technology projects a precise reticle, ensuring that your point of aim and point of impact are always perfectly aligned. No more second-guessing your shots.

Quick and Easy Target Acquisition: The EXPS2-0 features a large, easy-to-see 68-MOA (Minute of Angle) circle with a precise 1-MOA dot at its center. This unique reticle design allows for rapid target acquisition, making it ideal for both close-quarters combat and long-range engagements.

Rock-Solid Durability: Built to withstand the harshest conditions, the EOTech® EXPS2-0 is constructed from aircraft-grade aluminum and is fully submersible in water up to 10 feet. Its compact, lightweight design ensures minimal impact on your weapon's balance and handling.

Tool-Free Mounting: With its quick-detach lever, mounting and dismounting the EXPS2-0 is a breeze, and it retains zero when reinstalled. No need for additional tools, ensuring you spend more time on the range and less time on setup.

Battery Life That Lasts: 1,000 continuous hours at nominal setting 12 at room temperature

Made in the USA: Rest assured knowing your EOTech® EXPS2-0 is proudly made in the United States, built to the highest quality standards in the industry.

Elevate your shooting experience with the EOTech® EXPS2-0 holographic sight. Whether you're a law enforcement officer, a competitive shooter, or a dedicated hunter, this sight will redefine your expectations of precision and reliability. Dominate the field with the EOTech® EXPS2-0—your ultimate tactical advantage.

Upgrade your optics today and experience the EOTech® difference.


  • Non-Night Vision Compatible
  • L X W X H: 3.8" x 2.3" x 2.9" (96.5 x 58.4 x 73.7 mm)
  • Weight: 11.2oz (317.5g)
  • Water Resistant: 10ft. (3 m) depth
  • Mount: 1" Weaver or MIL-STD-1913 rail
  • Windage & Elevation Adjustment: 0.5 MOA per click
  • Brightness: 20 daylight settings
  • Power Source: 1 x CR123 battery
  • Battery Life: 1,000 continuous hours at nominal setting 12 at room temperature
  • Operating Temperature: -40°F to 140°F (-40°C to 60°C)
  • Country of Origin: Made in USA

Included in the Box:

  • HWS EXPS2™
  • Quick-Start Guide
  • Warranty Card
  • CR123 Battery
  • Protective Case

Introducing the EOTech® HWS EXPS3-0: Precision Red Dot Excellence

When it comes to rapid target acquisition, accuracy, and durability, the EOTech® HWS EXPS3-0 stands in a league of its own. Designed for the discerning marksman, this holographic weapon sight delivers a level of performance that's second to none.


Night Vision Compatible

Crystal Clear Optics: The EXPS3-0 features a state-of-the-art holographic reticle with an astounding 68 MOA circle and a precise 1 MOA dot, providing a clear and crisp sight picture that's parallax-free. Whether you're engaging targets up close or at a distance, you'll enjoy unparalleled clarity.

Enhanced Speed and Accuracy: With its advanced holographic technology, this optic allows for lightning-fast target acquisition. Simply place the reticle on your target, and you're ready to engage. The EXPS3-0 helps you stay on target, even in high-stress situations.

Unmatched Durability: Built like a tank, the EXPS3-0 is constructed from high-quality materials that are built to withstand the harshest conditions. It's waterproof, fogproof, and shockproof, ensuring reliable performance in any environment.

Quick Detach Mounting: Equipped with a quick-detach lever, the EXPS3-0 can be easily and securely mounted to any Picatinny or Weaver rail, allowing for quick removal and reinstallation without losing zero.

Efficient Power Management: SIDE BUTTON OPERATION featuring a side-mounted, easy-to-access control panel, you can adjust the brightness settings quickly. The EXPS3-0 also boasts an auto-shutdown feature to conserve battery life, giving you more time in the field.

Battle-Proven Performance: Trusted by military and law enforcement professionals worldwide, the EXPS3-0 has a proven track record of reliability and precision in high-stakes situations.

Upgrade Your Arsenal: For those who demand the best, the EOTech® HWS EXPS3-0 is the ultimate red dot sight, offering unmatched speed, accuracy, and ruggedness. Whether you're a competitive shooter or a tactical operator, this holographic weapon sight will elevate your performance to new heights.

Optical Specifications:

  • Magnification: 1x (no magnification).
  • Objective Lens Diameter: 30mm.
  • Reticle: Holographic with a 68 MOA circle and 1 MOA dot.
  • Parallax-free: Yes, at 100 yards.

Dimensions and Weight:

  • Length: Approximately 3.8 inches (97mm).
  • Width: Approximately 2.3 inches (58mm).
  • Height: Approximately 2.9 inches (73mm).
  • Weight: Approximately 11.2 ounces (317.5 grams).

Construction and Features:

  • Housing Material: Rugged aluminum housing.
  • Mounting: Quick-detach (QD) lever for easy attachment to Picatinny or Weaver rails.
  • Water Resistance: Water-resistant, not submersible.
  • Battery Life: Approximately 600 hours at a nominal setting.
  • Brightness Settings: Multiple brightness settings for different lighting conditions.
  • Night Vision Compatibility: Compatible with Gen I-III night vision devices.
  • Adjustment: Windage and elevation adjustments with 0.5 MOA clicks.
  • Power Source: One CR123 lithium battery.

Additional Information:

  • Field of View: Unlimited eye relief and field of view.
  • Mounting: Fits 1-inch Picatinny or Weaver rails.
  • Auto Shut-Off: Automatic shutdown after 8 hours to conserve battery life (programmable to 4 hours).

Included in the Box:

  • HWS EXPS3-3™
  • Quick-Start Guide
  • Warranty Card
  • CR123 Battery
  • Protective Case
Available options: 
430109748 430109749
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