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Daniel Defense

Daniel Defense M4A1 Block II Complete Upper Receiver 5.56 14.5"

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$1,499.00
SKU:
23-004-13150

Out of stock

Description

Overview

The Daniel Defense 14.5″ M4A1 Upper Receiver is a battle tested upper built around a Cold Hammer Forged barrel and engineered for dependable performance in tactical, duty, and range rifles. Its classic M4A1 configuration delivers balanced handling and solid cycling, giving you a reliable platform with plenty of accessory mounting space. This upper is a straightforward way to upgrade your build with premium components designed to work together.

What It Does

This upper receiver group gives your AR-15 pattern rifle a compact and capable barrel length that handles comfortably while still producing effective velocity with common 5.56 NATO ammunition. A continuous rail system lets you mount optics, lights, lasers, and back up sights exactly where you want them. Combined with a quality gas system, bolt carrier group, and charging handle, it supports smooth operation and consistent function under frequent use. The 14.5″ barrel can be paired with a pinned muzzle device later to meet local length requirements if required.

Features

  • Cold Hammer Forged barrel engineered for consistent accuracy and longevity.
  • Classic M4A1 profile that balances compact handling with performance.
  • Continuous rail system for accessory mounting and modularity.
  • Premium bolt carrier group included for dependable function.
  • Ambidextrous charging handle for flexible operation.
  • Carbine length gas system tuned for reliable cycling.
  • Built by Daniel Defense with quality components that work together.

Specs

  • Chambered in 5.56 NATO for broad ammunition compatibility.
  • 14.5″ Cold Hammer Forged barrel with tuned gas system.
  • Rail system offering continuous Picatinny space.
  • Designed for AR-15 pattern lowers.
  • Includes bolt carrier group and charging handle.

FAQ

Will this fit my AR-15 lower?
Yes. It is designed to mate with standard AR-15 lowers using typical barrel extension and pin locations.

Does it include a bolt carrier group?
Yes. A premium bolt carrier group and charging handle are included for reliable function.

Is the barrel length legal?
The 14.5″ barrel can be used with a permanently pinned muzzle device to meet 16″ overall length requirements where needed.

Can I mount optics and accessories?
Yes. The continuous rail system provides generous space for sights, lights, lasers, and other gear.

Is this suitable for duty or defensive use?
Yes. Its quality build and balanced design make it a strong choice for a variety of service, defensive, and training builds.

Does it work well with common ammunition?
Yes. It is chambered in 5.56 NATO and functions reliably across a wide range of typical loadings.