M4 Carbine 5.56mm 16 Inch Quad Rail

Description Table of Contents Toggle Key SpecificationsWhat’s in the BoxM4 Carbine 5.56mm 16 Inch Quad Rail — Key SpecificationsPerformance & ReliabilityIntended Use & ApplicationsWhy Buy From CaliperDepot? Key Specifications Caliber/Gauge: 223 Rem | 5.56 NATO Capacity: 20 1 Barrel Length: 16.1" Action: Semi-Auto Sights: MAGPUL MBUS What’s in the Box 1 × 20 rd. The M4 Carbine 5.56mm 16 Inch Quad Rail is a modern tactical rifle that delivers reliability, accuracy, and versatility in a compact platform. Built on the proven AR-15 design, this carbine features a 16-inch barrel that balances maneuverability with velocity retention, making it ideal for both professional and civilian shooters. The integrated quad rail system allows for unlimited customization of optics, lights, and tactical accessories. With front and rear flip sights included, you have immediate backup iron sights for any mission. M4 Carbine 5.56mm 16 Inch Quad Rail — Key Specifications Caliber: 5.56mm NATO (.223 Remington) Barrel Length: 16 inches Action: Semi-automatic direct impingement Handguard: Quad rail system for maximum accessory mounting Sights: Front and rear flip sights (backup iron sights included) Magazine Capacity: Standard 30-round AR-15 compatible magazines Finish: Mil-Spec anodized aluminum Rail System: Full-length quad rail design for optics, lights, lasers, and tactical accessories Ergonomic Controls: Standard AR-15 safety selector and charging handle Picatinny Rails: Multiple mounting points for customization Performance & Reliability The M4 Carbine 5.56mm 16 Inch Quad Rail delivers exceptional reliability in demanding conditions. The 16-inch barrel provides excellent velocity while maintaining a compact profile, producing approximately 2,800 feet per second with standard 5.56mm NATO loads. The direct impingement system ensures reliable cycling with both military-spec and commercial ammunition variants. Field-tested designs have proven that this platform functions flawlessly across thousands of rounds. Accuracy from the M4 Carbine 5.56mm 16 Inch Quad Rail is outstanding, with capable shooters achieving sub-MOA groups at distance. The quad rail handguard provides a solid mounting platform for optics and accessories without adding significant weight. The included flip sights are precision-adjustable for windage and elevation, giving you immediate accuracy adjustments in the field. Whether using red dots, magnified optics, or laser systems mounted via Picatinny rails, this carbine maintains zero shift reliability. Durability is a hallmark of this platform, with mil-spec components engineered for extended service life. The 5.56mm NATO cartridge is inherently reliable and produces moderate recoil, enabling fast follow-up shots. Regular maintenance following standard AR-15 protocols ensures this carbine will serve reliably for thousands of rounds. The quad rail system’s robust construction protects your mounting accessories from damage during transport and deployment. Intended Use & Applications Law enforcement agencies, military units, and professional tactical operators rely on the M4 Carbine 5.56mm 16 Inch Quad Rail for critical missions. Home defense shooters appreciate the compact 16-inch barrel that fits easily in vehicles and tight spaces while providing excellent stopping power. Competition shooters use this platform for carbine matches, three-gun competitions, and precision events where modular customization is essential. The quad rail design allows each shooter to build their perfect setup with optics and accessories tailored to their specific application. Hunters leverage the AR Rifles platform for predator control, varmint hunting, and light game applications across North America. The 5.56mm NATO cartridge delivers effective ballistics to 300 yards with proper ammunition selection. The quad rail system enables mounting of lights for low-light hunting situations and magnified optics for precision shooting at distance. Modularity means you can quickly transition from hunting configuration to tactical setup. Civilian recreational shooters appreciate the M4 Carbine 5.56mm 16 Inch Quad Rail for its affordability, ease of customization, and proven reliability. Community ranges welcome this platform, and ammunition availability for 5.56mm NATO ensures cost-effective training. The quad rail handguard lets you experiment with different optics and accessories to find your ideal shooting setup. Whether you’re building your first tactical rifle or adding to an existing collection, this carbine platform offers unlimited potential for personalization through AR Parts and accessories. Why Buy From CaliperDepot? CaliperDepot.com specializes in firearms, tactical gear, and ammunition with expert product knowledge and competitive pricing. We maintain extensive in-stock inventory of popular M4 Carbine configurations and all necessary components for customization. Our fast, discreet shipping ensures your order arrives quickly and securely. We support both experienced shooters and first-time buyers with helpful product information and customer service. When you purchase from CaliperDepot, you’re buying from a trusted retailer with a reputation for reliability and fair pricing. We understand that serious shooters demand quality products, accurate descriptions, and prompt delivery. Our customer reviews reflect our commitment to excellence. With secure checkout, multiple payment options, and responsive support, shopping for tactical rifles has never been easier. The M4 Carbine 5.56mm 16 Inch Quad Rail is ready to ship from our warehouse to your door. We stand behind every product we sell with excellent customer service and expertise. Don’t settle for incomplete information or uncertain availability — order your M4 Carbine 5.56mm 16 Inch Quad Rail from CaliperDepot today and experience the difference professional firearms retail makes. With our competitive prices and fast shipping, you’ll have your tactical rifle in your hands and ready for the range within days.