The Cobalt Kinetics Cobalt CK-Pro-URG-16-S-CKG 15.5" Upper Receiver Group delivers a refined AR-pattern upper for shooters who want a complete, ready-to-mount solution. Built as a fully assembled upper rather than a bare receiver, it features a long, slim handguard with generous slotting for accessory mounting and a continuous top rail for optics and sights. Designed to pin directly onto a standard AR lower using traditional takedown pins, it offers a clean, modern profile with precise machining and a durable, uniform finish.

This 15.5" configuration is the longest option in the Pro Series lineup, giving shooters a generous sight radius and ample rail space for lights, grips, and other accessories. It is ideal for range use, training, and competition-focused builds where balance and control matter. Before pairing with a bolt carrier group and barrel, users should confirm the caliber marking on the barrel or receiver to ensure proper compatibility. Cobalt Kinetics is known for thoughtful engineering and attention to detail, and this upper receiver group reflects that commitment to quality and innovation.

Key Features:

• Manufacturer: Cobalt Kinetics
• Model: CK-Pro-URG-16-S-CKG 15.5" Upper Receiver Group
• Length: 24.7 Inches (Overall Upper Assembly)
• Height: 4.4 Inches
• Width: 4.4 Inches
• Weight: 2.14 Pounds