Great Lakes Firearms GL15 223 Wylde 7.5" AR-15 Upper Assembly

The Great Lakes Firearms GL15223SSPB delivers precision chambering in 223 Wylde with a compact 7.5-inch barrel configuration. This upper assembly combines stainless steel construction with black finishing for enhanced durability and corrosion resistance in demanding environments.

What Makes This Different

The 223 Wylde chamber specification provides superior accuracy compared to standard 5.56 NATO chambers while maintaining full compatibility with both .223 Remington and 5.56 NATO ammunition. The stainless steel barrel construction offers enhanced longevity and heat dissipation over standard carbon steel alternatives. The 7.5-inch barrel length creates an optimal balance between maneuverability and ballistic performance for close-quarters applications.

Key Features

• 223 Wylde chamber for enhanced accuracy with .223 Rem and 5.56 NATO ammunition
• 7.5-inch stainless steel barrel with black finish coating
• Standard AR-15 upper receiver compatibility with mil-spec components
• Picatinny rail system for optics and accessory mounting
• 1:7 or 1:8 twist rate optimized for 55-77 grain projectiles
• Gas system length engineered for reliable cycling with various loads
• M4 feed ramp extensions for improved feeding reliability

This configuration excels in applications requiring compact dimensions without sacrificing terminal performance. The shorter barrel length reduces overall weapon system weight while maintaining effective range capabilities out to 200-300 yards. The stainless steel construction resists throat erosion and maintains accuracy longer than standard barrel materials, particularly important in high-volume shooting scenarios.

Technical Specs

• Caliber: 223 Wylde chamber specification
• Barrel Length: 7.5 inches
• Barrel Material: Stainless steel with black finish
• Upper Receiver: Forged aluminum, mil-spec dimensions
• Gas System: Pistol length
• Thread Pitch: 1/2x28 TPI muzzle threads
• Rail System: Picatinny top rail, M-LOK or KeyMod handguard compatibility
• Weight: Approximately 2.8-3.2 pounds (upper assembly)
• Manufacturer: Great Lakes Firearms

The GL15223SSPB represents proven engineering focused on reliability and accuracy in a compact platform. The combination of 223 Wylde chambering and stainless steel construction provides measurable performance advantages over standard configurations, making this upper assembly a solid choice for builds requiring both precision and durability.