The Sons of Liberty Gun Works M4-L89  upper receiver is optimized for CQB, sport shooting, and other tactical applications. This complete upper receiver features an 11.5-inch Cold Hammer Forged 4150 CMV barrel with a titanium barrel nut, and a H2 flash hider. The Sons of Liberty Gun Works L89 M-LOK handguard is designed to maximize strength and rigidity while minimizing weight.

Features:

• Complete 5.56 NATO AR-15 upper
• Barrel length: 11.5-inch
• Barrel material: 4150 CMV
• Handguard: Sons of Liberty Gun Works M4-L89
• Muzzle Device: SOLGW NOX9 flash hider
• Carbine-length gas system
• SOLGW Angry Patriot Lower
• SOLGW Vltor A5 receiver extension
• FCD 50Q selector
• SOLGW Ambi Charging Handle
• B5 Furniture