Colt AR15A4 5.56 NATO 20 Inch Barrel Black Semi-Automatic Rifle

Description Table of Contents Toggle Key SpecificationsWhat’s in the BoxColt AR15A4 5.56 NATO — Key SpecificationsPerformance & ReliabilityIntended Use & ApplicationsWhy Buy From CaliperDepot? Key Specifications Caliber/Gauge: 223 Rem | 5.56 NATO Capacity: 30 1 Barrel Length: 20" Action: Semi-Auto Sights: Adjustable What’s in the Box 1 × 30 rd. The Colt AR15A4 5.56 NATO rifle is one of the most trusted and proven semi-automatic rifle platforms available today. This iconic firearm combines reliability, accuracy, and modularity in a design that shooters and military professionals have depended on for decades. Built on decades of Colt’s manufacturing excellence, the Colt AR15A4 delivers consistent performance whether you are a seasoned enthusiast, law enforcement officer, or building your first AR platform rifle. From the range to tactical applications, this rifle represents American firearms manufacturing at its finest. Colt AR15A4 5.56 NATO — Key Specifications Caliber: 5.56x45mm NATO Action: Semi-automatic, direct impingement Barrel Length: 20 inches Barrel Threading: 1/2×28 for suppressor or muzzle device compatibility Magazine Capacity: 30 rounds (standard AR-15 magazine) Finish: Black anodized aluminum receiver, black phosphate barrel Stock: Synthetic A4-style buttstock with trapdoor compartment Handguard: M4-style carbine length rail system Sights: A2-style front sight post with carry handle rear sight Safety: Ambidextrous safety selector lever Overall Length: Approximately 39 inches Weight: Approximately 7.5 pounds (unloaded) Performance & Reliability The Colt AR15A4 5.56 NATO has earned its legendary reputation through consistent, reliable performance in demanding conditions. The direct impingement operating system provides excellent reliability and low maintenance compared to some alternative designs, making it ideal for shooters who want dependable function without constant cleaning. With the 20-inch barrel, this rifle achieves excellent velocity for the 5.56 NATO cartridge, resulting in superior accuracy and consistent ballistic performance downrange. The Colt AR15A4 delivers the accuracy and reliability you expect from America’s most trusted firearms manufacturer. Accuracy testing of the Colt AR15A4 5.56 NATO consistently demonstrates that the platform can produce tight groups at distance, with most shooters easily achieving sub-MOA performance with quality ammunition. The A2-style front sight and carry handle rear sight system provides a proven sight picture that has been refined through countless military and civilian applications. The 20-inch barrel length provides an excellent balance between velocity, accuracy, and ergonomics, making the Colt AR15A4 comfortable to shoot and control during extended range sessions. Durability is where the Colt AR15A4 5.56 NATO truly shines, with many examples in the field logging thousands of rounds with minimal maintenance. The high-quality materials and manufacturing processes employed by Colt ensure that your rifle will function reliably for decades. Whether you are running suppressed ammunition, standard loads, or pushing the limits with hot rounds, the Colt AR15A4 is built to handle it all without skipping a beat. Intended Use & Applications The Colt AR15A4 5.56 NATO appeals to a broad spectrum of shooters, from first-time AR platform buyers to experienced tactical professionals. Law enforcement agencies and military units worldwide have relied on AR-15 platforms for decades, and the Colt AR15A4 brings that proven heritage to civilian shooters. Whether you are interested in sport shooting, hunting medium game, home defense, or general recreational shooting, the Colt AR15A4 provides a versatile platform that excels in all these applications. For the competitive shooter, the Colt AR15A4 5.56 NATO provides an excellent foundation for building a custom rifle tailored to your specific needs. The modular design means you can upgrade components, add optics, lights, and accessories as your skills and interests evolve. Many 3-gun competitors and tactical shooters begin with a rifle like this and customize it to match their shooting style. The 1/2×28 threaded muzzle enables easy attachment of muzzle brakes, flash hiders, or suppressors for noise reduction and recoil management. Home defense and personal protection represent another important application for the Colt AR15A4 5.56 NATO. The rifle’s ergonomics, reliability, and accuracy make it an excellent choice for protecting your family and property. The 5.56 NATO cartridge offers superior ballistic performance compared to handgun rounds, and the longer sight radius inherent in the 20-inch barrel configuration provides significantly better accuracy in high-stress situations. Many home defense professionals recommend the AR-15 platform as the optimal choice for home security. Why Buy From CaliperDepot? CaliperDepot is committed to providing shooters with the highest quality firearms and ammunition at competitive prices. We maintain a large in-stock inventory of popular rifles like the Colt AR15A4 5.56 NATO, ensuring that you can get the firearm you want when you want it. Our customer service team is knowledgeable, friendly, and ready to answer any questions about specifications, compatibility, or performance. We offer fast, discreet shipping to licensed dealers in your area, and we stand behind every product we sell. When you purchase a firearm from CaliperDepot, you are supporting a retailer that understands shooters’ needs and priorities. We stock quality products from trusted manufacturers like Colt, and we price them competitively so you get the best value for your money. Our streamlined checkout process and secure payment options make purchasing your next rifle simple and convenient. Whether you are a first-time buyer or a seasoned collector, CaliperDepot is your trusted source for quality firearms and expert service. The Colt AR15A4 5.56 NATO is the complete rifle you need to start your AR platform journey or add to your existing collection. With proven reliability, excellent accuracy, and proven versatility, this rifle delivers everything you expect from Colt. Visit CaliperDepot today to check availability and add the Colt AR15A4 5.56 NATO to your cart. Our competitive pricing, fast shipping, and expert customer service ensure you will be satisfied with your purchase—order your Colt AR15A4 5.56 NATO from CaliperDepot now and experience the difference quality makes. For more information about the 5.56 NATO cartridge and its history, visit the Wikipedia article on 5.56x45mm NATO. You can also explore our complete selection of firearms and AR rifles to find other platforms and options that suit your needs.