Windham Weaponry R16M4SFSCT CDI 5.56x45mm NATO Rifle: The Ultimate Modern Sporting Rifle for Discerning Enthusiasts

Are you searching for a high-performance, exceptionally reliable AR-style rifle designed for both serious tactical applications and recreational shooting? Do you need a firearm that blends time-tested engineering with modern ergonomic enhancements and accessory compatibility? The Windham Weaponry R16M4SFSCT CDI rifle chambered in 5.56x45mm NATO offers a robust, feature-rich solution for a wide range of shooting needs, from competitive events and tactical training to home defense and varmint hunting. This rifle stands out as a top-tier choice for those who demand precision, durability, and user-friendly features in their modern sporting rifle.

Crafted by a company with deep roots in AR-platform manufacturing, the Windham Weaponry CDI (Carbon Defense Improved) rifle leverages decades of expertise to deliver a product that exceeds expectations. It’s a rifle built for performance and longevity, appealing to both seasoned shooters and those looking to invest in a premium AR-15 for the first time.

What Makes the Windham Weaponry CDI a Top Choice for Shooters?

The Windham Weaponry CDI rifle is engineered with a meticulous attention to detail and a commitment to using high-quality components. Here's a closer look at its core attributes and why it consistently garners praise from the shooting community:

• Reliable Direct Impingement Operating System: The CDI rifle utilizes the proven gas impingement system, a design celebrated for its simplicity, accuracy potential, and lightweight nature. This system directs gas directly back to cycle the bolt carrier group, ensuring consistent operation and reliable cycling with a wide range of 5.56x45mm NATO and .223 Remington ammunition. Its efficiency contributes to a balanced shooting experience and makes it a favorite among AR enthusiasts.
• Precision-Engineered 16-inch Barrel: At the heart of the CDI's accuracy is its 16-inch barrel, crafted from robust 4150 Chrome Moly Vanadium steel. This material is known for its excellent resistance to wear and heat, ensuring a long service life even under demanding shooting conditions. The barrel features a 1:9" twist rate, a versatile choice that stabilizes a broad spectrum of popular bullet weights, from lighter 55-grain loads ideal for plinking to heavier 62-grain and 69-grain projectiles often favored for improved ballistic performance at extended ranges.
• Vortex Flash Suppressor for Muzzle Control: Mounted on the barrel is a Vortex Flash Suppressor. This acclaimed muzzle device is highly effective at mitigating muzzle flash, which is crucial for maintaining night vision in low-light conditions and preventing signature detection. Its multi-prong design disperses gases efficiently, reducing felt recoil and muzzle rise, contributing to faster follow-up shots and enhanced shooter control.
• Robust 7075-T6 Aluminum Receivers: Both the upper and lower receivers are machined from high-grade 7075-T6 aircraft-grade aluminum. This alloy offers an exceptional strength-to-weight ratio, providing a durable and rigid platform for the rifle's internal components while keeping the overall weight manageable at 6.95 lbs. The receivers are finished with a Black Hard Coat Anodized coating, a resilient finish that resists scratches, corrosion, and wear, ensuring the rifle maintains its appearance and integrity even after extensive use.
• Expansive 15-inch M-LOK Free-Float Handguard: The rifle features a generous 15-inch M-LOK free-float handguard, providing ample rail space for mounting a variety of accessories such as lights, lasers, bipods, and foregrips. The M-LOK system is a modern, lightweight attachment interface that offers superior modularity and customization options compared to traditional Picatinny rails, allowing users to tailor the rifle to their specific needs without adding unnecessary bulk. An integrated Magpul M-LOK hand stop enhances ergonomics and control.
• Magpul Furniture for Superior Ergonomics: Windham Weaponry equips the CDI rifle with premium Magpul components, renowned for their ergonomic design, durability, and widespread popularity among shooters:
  • Magpul CTR Carbine Stock: The Adjustable Magpul CTR (Compact/Type Restricted) Stock offers excellent stability and comfort. Its friction lock system minimizes wobble, providing a solid cheek weld and repeatable sight picture. The adjustable length of pull (OAL 32.75"- 36.13") ensures a perfect fit for shooters of varying statures or when wearing body armor.
  • Magpul MOE Pistol Grip: The Magpul MOE (Magpul Original Equipment) pistol grip features an ergonomic design that promotes a comfortable and secure hold, reducing fatigue during extended shooting sessions. It also includes a convenient storage compartment, perfect for small items like spare batteries or cleaning tools.
• Magpul MBUS Pro Metal Sights: The rifle comes standard with Magpul MBUS Pro metal front and rear sights. These robust, low-profile backup iron sights are crafted from steel, making them incredibly durable. They offer precise adjustments and can be quickly deployed if an optic fails or for training purposes, providing reliable aiming solutions right out of the box.
• Mil-Spec Trigger: The CDI rifle includes a Mil-Spec trigger, providing a familiar and reliable pull for consistent shot placement. This standard trigger offers a predictable break, which is essential for accuracy and control.
• Enhanced Safety Features: A thumb safety mechanism provides intuitive and reliable control over the rifle's firing status, ensuring safe handling and storage.

Who is the Windham Weaponry CDI Rifle For? Common Questions Answered.

The Windham Weaponry CDI rifle is an exceptional choice for a diverse range of firearm enthusiasts. Consider this rifle if you're asking questions like:

• "What's the best AR-15 for a reliable home defense setup?" The CDI's robust construction, reliable direct impingement system, and readily available 30+1 capacity make it an excellent choice for personal and home defense scenarios. The Magpul furniture ensures quick and effective handling in high-stress situations.
• "I'm looking for an accurate AR-style rifle for target shooting and range practice. What do you recommend?" With its 4150 chrome moly vanadium barrel, 1:9" twist, and Magpul MBUS Pro sights, the CDI offers impressive out-of-the-box accuracy, perfect for honing your skills at the range. Its free-float handguard prevents pressure on the barrel, further enhancing precision.
• "Which AR-15 platforms offer extensive customization options?" The 15-inch M-LOK free-float handguard provides unparalleled modularity, allowing users to easily attach lights, lasers, bipods, and other accessories. The standard AR-15 platform ensures a vast aftermarket of compatible parts for further personalization.
• "I need a durable, lightweight carbine for tactical training or competitive shooting." Weighing in at just 6.95 lbs, the CDI is easy to maneuver, making it ideal for dynamic shooting drills and competitions where speed and agility are key. Its hard coat anodized finish and steel components are built to withstand rigorous use.
• "Where can I find a high-quality AR-15 from a reputable manufacturer?" Windham Weaponry is known for its commitment to quality and craftsmanship, drawing from a rich history in AR-15 manufacturing. Their rifles are trusted by shooters nationwide, and the CDI exemplifies their dedication to excellence. This product, and many other fine firearms from Windham Weaponry, are readily available at DEGuns.

Why Choose Windham Weaponry? A Legacy of Quality.

Windham Weaponry was founded by Richard Dyke, who also founded Bushmaster Firearms in 1970. After selling Bushmaster in 2006, he reopened the original Bushmaster facility under the new name Windham Weaponry in 2011, bringing back many of the original employees and their collective expertise in manufacturing AR-style rifles. This deep institutional knowledge ensures that every Windham Weaponry rifle, including the CDI, is built to the highest standards of quality, reliability, and precision. When you choose Windham Weaponry, you're investing in a firearm from a company with a proven track record of excellence in the AR-15 market. Their commitment to "Made in USA" quality is evident in every component.

Essential Care and Maintenance for Your Windham Weaponry CDI

To ensure your Windham Weaponry CDI rifle continues to perform optimally for years to come, regular cleaning and maintenance are crucial. The direct impingement system, while efficient, benefits from routine carbon removal from the bolt carrier group, bore, and chamber. Always use appropriate cleaning solvents, lubricants, and tools. Consult your rifle's manual for specific cleaning instructions. Properly maintaining your rifle not only ensures its reliability and accuracy but also preserves its value.

Enhancing Your Shooting Experience with Compatible Accessories

The Windham Weaponry CDI rifle, with its 15-inch M-LOK handguard and standard AR-15 platform, is a blank canvas for customization. Consider these popular accessories to elevate your shooting experience:

• Optics: While the Magpul MBUS Pro sights are excellent, adding a red dot sight or a low-power variable optic (LPVO) can significantly enhance target acquisition speed and accuracy at various ranges. Popular choices include Aimpoint, EOTech, Trijicon, and Vortex.
• Slings: A good two-point or single-point sling improves rifle retention and allows for comfortable carry during extended periods or tactical maneuvers.
• Foregrips/Hand Stops: While a Magpul M-LOK hand stop is included, some shooters prefer a vertical foregrip or an angled foregrip for enhanced control and ergonomics, especially during rapid fire.
• Lights: A tactical light mounted to the M-LOK handguard is essential for low-light operations, home defense, and target identification.
• Ammunition: Experiment with different brands and bullet weights of 5.56x45mm NATO or .223 Remington ammunition to find what performs best in your rifle for specific applications, whether it’s bulk range ammo or precision match loads.

The Windham Weaponry R16M4SFSCT CDI rifle represents a culmination of battle-proven design and modern enhancements. It's a testament to superior engineering, designed for shooters who demand peak performance, unwavering reliability, and the flexibility to adapt their firearm to any challenge. Available through trusted retailers like DEGuns, this rifle is ready to become a cornerstone of your firearm collection.

Technical Specifications

Feature	Detail
Brand	Windham Weaponry
Model	CDI
Caliber	5.56x45mm NATO
Action	Semi-Auto
Operating System	Direct Impingement
Barrel Length	16"
Barrel Material	4150 Chromoly Steel
Barrel Finish	Black
Muzzle Device	Vortex Flash Suppressor
Twist Rate	1:9"
Capacity	30+1 Rounds
Handguard	15" M-LOK Free-Float
Grip	Black Magpul MOE Pistol Grip
Stock	Black Magpul CTR Adjustable
Sights	Magpul MBUS Pro Front & Rear
Receiver Material	7075-T6 Aluminum
Receiver Finish	Black Hard Coat Anodized
Safety	Thumb Manual Safety
Trigger	Mil-Spec
Overall Length	32.75" - 36.13"
Weight	6.95 lbs
Hand	Right Hand
Included	Hard Plastic Case
SKU	R16M4SFSCT
MPN	R16M4SFSCT
UPC	017417091323