Discover the pinnacle of tactical excellence with the Daniel Defense M4A1 RII 14.5″ 5.56mm Semi-Automatic AR-15 Rifle, a battle-proven platform engineered for unmatched reliability and precision in demanding environments. Whether you’re a seasoned enthusiast or a professional seeking a dependable workhorse, this rifle delivers mil-spec performance that exceeds expectations, ensuring confidence in every shot.
Key Features
- Cold Hammer Forged Barrel: 14.5-inch chrome-lined barrel with 1:7 twist rate for superior accuracy and longevity, stabilizing a wide range of 5.56mm ammunition.
- RIS II Quad Rail: Iconic free-float rail system provides ample mounting space for optics, lights, and grips, allowing seamless customization to fit your tactical needs.
- Mil-Spec Construction: Forged 7075-T6 aluminum upper and lower receivers with enhanced flared magazine well for quick, reliable reloads under pressure.
- Ambidextrous Controls: Fully ambidextrous safety selector and bolt catch for intuitive operation by left- or right-handed shooters.
- Adjustable Stock: 6-position collapsible synthetic stock offers customizable length of pull, enhancing ergonomics for various body types and shooting positions.
Technical Specifications
- Action: Semi-Automatic
- Caliber: 5.56mm NATO
- Barrel Length: 14.5 inches (pinned and welded muzzle device for 16-inch overall compliance)
- Gas System: Carbine-length for balanced recoil and reliable cycling
- Muzzle Device: Knight’s Armament Company A2 flash hider
- Finish: Type III hard-coat anodized black
- Stock Material: Synthetic
- Magazine Capacity: 30 rounds (compatible with STANAG magazines)
- Weight: Approximately 6.74 lbs (unloaded)
- Overall Length: 31.5 – 34.75 inches (collapsed/extended)
- Condition: New
- CA Compliant: No
Why Choose the Daniel Defense M4A1 RII?
This AR-15 rifle addresses common challenges faced by shooters, such as inconsistent performance in adverse conditions or limited accessory options. Its robust cold hammer forged barrel withstands high round counts without losing zero, while the durable RIS II rail ensures your setup remains secure during rigorous training or field use. Users praise its smooth operation and sub-MOA accuracy, making it ideal for home defense, range sessions, or competitive shooting. Built to mil-spec standards, it offers peace of mind with lifetime quality assurance, outperforming lesser builds in reliability and value.
Elevate your arsenal today with the Daniel Defense M4A1 RII – the ultimate fusion of heritage design and modern tactical prowess. Secure yours and experience the difference precision engineering makes.
Frequently Asked Questions
1. What makes the RIS II rail system special?
The RIS II quad rail is a legendary design known for its rock-solid lockup and versatility, allowing secure attachment of multiple accessories without compromising barrel harmonics for better accuracy.
2. Is the M4A1 RII suitable for left-handed shooters?
Yes, it features ambidextrous controls, including the safety selector and bolt release, ensuring comfortable and efficient handling for all users.
3. How does the carbine gas system benefit performance?
The carbine-length gas system provides reliable ejection and reduced recoil compared to rifle-length systems, making follow-up shots faster while maintaining compatibility with suppressors.

