The Sons Of Liberty Gun Works Solgw Bs L89 Urg 14.5 .223 P/W Pln B upper receiver assembly is built around the Broadsword-89 platform, delivering a rigid, precise interface using traditional two-piece AR-15 construction. The extended barrel nut, Drivelock tensioning crossbolts, and keyed upper receiver face work together with the L89 rail system to create a stable foundation for accuracy-focused shooting. A 14.5" precision SPR barrel with 5/8x24 threads comes pre-fitted with a Plan B flash hider that is compatible with Q/Hub suppressors, giving shooters ready-to-run muzzle performance and suppressor flexibility.

This complete upper is ideal for building a refined AR-15 suited to range use, training, and practical competition where consistency and repeatable zero are essential. The 13.75" L89 handguard offers generous mounting space for lights, grips, and other accessories while maintaining a slim, controllable profile. With its focus on rigidity and alignment, this upper reflects Sons Of Liberty Gun Works’ reputation for careful engineering, dependable performance, and attention to detail.

• Manufacturer: Sons of Liberty Gun Works
• Model: Solgw Bs L89 Urg 14.5 .223 P/W Pln B
• Barrel Length: 14.50" Precision SPR Barrel
• Muzzle Device: Plan B Flash Hider, Q/Hub Suppressor Compatible
• Handguard Length: 13.75" L89 Handguard
• Thread Pattern: 5/8x24
• Upper Type: Complete Upper Receiver Assembly