Sons of Liberty Gun Works M4-L89 5.56 NATO Barreled Upper Receiver - 13.7" - No Muzzle Device

Start your next AR-15 build with the Sons of Liberty Gun Works barreled upper receiver, featuring a compact 13.7" barrel and the SOLGW L89 M-LOK handguard. The 13.7” barrel is chambered in 5.56 NATO, constructed from 4150 CMV steel, and uses a mid-length gas system. The barrel is threaded 1/2x28 and ready to accept your favorite muzzle device.

Features:

• 13.7" 4150 CMV steel barrel
• Chambered in 5.56 NATO
• Mid-length gas system
• 1/2x28 threaded barrel, no muzzle device included
• L89 free-float M-LOK handguard with titanium barrel nut
• Seven sides of M-LOK slots
• Integrated QD sling sockets

The L89 handguard is designed to provide maximum mounting space and strength without excess weight. It features a lightweight yet durable titanium barrel nut, seven sides of M-LOK slots for accessories, and two integrated steel QD sling sockets. Additionally, it has engraved T-marks for consistent accessory placement.