Cobalt 11.5" 5.56 NATO URG: Balanced Performance for AR-15 Builds
The Cobalt CK-PRO-URG-556-115-B-CKG 11.5" URG is a high-quality complete upper receiver group engineered for shooters and builders who want a versatile and reliable 5.56 NATO upper. Featuring an 11.5-inch barrel, this model offers an excellent balance between compact size and improved ballistic performance. Whether you’re building a short-barreled rifle (SBR), an AR pistol, or a compact carbine, this Cobalt upper provides a ready-to-install solution with professional-grade components and consistent quality.
Cobalt has developed a strong reputation for producing dependable and precisely machined AR-15 components. The CK-PRO-URG-556-115-B-CKG reflects that commitment through tight manufacturing tolerances, durable finishes, and quality parts selection. This complete upper arrives fully assembled, including the barrel, handguard, gas system, and bolt carrier group, allowing builders to quickly complete their firearm without the need for specialized tools or extensive assembly experience.
Key Features of the Cobalt 11.5" 5.56 NATO URG
11.5-Inch 5.56 NATO Barrel
Optimal 11.5" barrel length delivers an excellent balance between compactness and improved velocity and terminal performance.
Complete Assembled Upper
Fully assembled upper receiver group including barrel, handguard, gas system, and bolt carrier group.
Precision Machined Components
Manufactured with tight tolerances for reliable function, smooth cycling, and consistent accuracy.
Durable Matte Black Finish
High-quality matte black finish resists corrosion, wear, and harsh environmental conditions.
Why Shooters Choose the Cobalt 11.5" 5.56 NATO URG
The Cobalt CK-PRO-URG-556-115-B-CKG 11.5" URG is a popular choice among AR-15 builders looking for a versatile and well-built upper receiver group. The 11.5-inch barrel length provides a practical middle ground between ultra-compact barrels and standard carbine lengths, offering better velocity and terminal ballistics while still maintaining excellent maneuverability. Because it comes as a complete, factory-assembled unit, it saves builders significant time and ensures professional-level fit and function. Many users appreciate Cobalt’s attention to detail and consistent quality control. The CK-PRO series is known for delivering reliable performance at a competitive price point, making it an attractive option for both new builders and experienced enthusiasts who want a dependable upper without unnecessary premium markups.
Additional benefits include:
- Ready-to-install complete upper receiver group
- 11.5" barrel offers improved velocity over shorter options
- Precision-machined for reliable cycling and accuracy
- Durable matte black finish for long-term corrosion resistance
- Compatible with standard AR-15 lower receivers
- Ideal for SBR, pistol, and compact carbine builds
- Backed by Cobalt’s reputation for quality AR components
Technical Specifications – Cobalt 11.5" 5.56 NATO URG
| Specification | Details |
|---|
| Manufacturer | Cobalt |
| Model Number | CK-PRO-URG-556-115-B-CKG |
| UPC | 850060560620 |
| Product Name | 11.5" CK PRO URG |
| Caliber | 5.56 NATO |
| Barrel Length | 11.5 inches |
| Platform | AR-15 |
| Configuration | Complete Upper Receiver Group (URG) |
| Finish | Matte Black |
| Best For | SBR builds, AR pistols, compact carbines |
Ideal Applications for the Cobalt 11.5" 5.56 NATO URG
The Cobalt CK-PRO-URG-556-115-B-CKG 11.5" URG is well-suited for a variety of modern AR-15 builds. The 11.5-inch barrel length makes it an excellent choice for short-barreled rifles (SBRs) and AR pistols where a balance of compactness and performance is desired. Home defense builds benefit from the reduced overall length while still providing better velocity and terminal ballistics than shorter barrels. Many builders also choose this upper for truck guns, backpack rifles, and general-purpose compact carbines. The complete nature of the upper makes it especially attractive to those who want professional results without the time and tools required to assemble an upper from scratch. Its durable construction and reliable components make it suitable for both recreational shooting and more demanding defensive or tactical applications.
This model is especially popular among AR-15 builders, short-barreled rifle enthusiasts, and shooters looking for a high-quality, versatile 11.5-inch complete upper receiver group.
Order the Cobalt 11.5" 5.56 NATO URG Today
Build with confidence using the Cobalt CK-PRO-URG-556-115-B-CKG 11.5" Complete Upper Receiver Group. This premium assembled upper is chambered in 5.56 NATO and features an 11.5-inch barrel, making it ideal for compact AR-15 configurations. Whether you’re building an SBR, pistol, or custom short-barreled rifle, this Cobalt upper delivers the quality, fit, and function serious shooters expect. Order your Cobalt CK-PRO-URG-556-115-B-CKG today and take the next step in your AR build with a complete, ready-to-install upper receiver group.
Cobalt 11.5" 5.56 NATO URG Complete Upper Receiver Group | CK-PRO-URG-556-115-B-CKG | UPC 850060560620 – Precision Built. Balanced Performance. Ready to Install.
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