Sons of Liberty Gun Works L89 5.56 NATO Barreled Upper Receiver w/ FCD Plan B Muzzle Device - 14.5" Pin and Weld

The Sons of Liberty Gun Works upper receiver is an excellent choice for building a reliable and high-performance AR-15. It features a 14.5" combat-grade barrel made from 4150 CMV steel, known for its durability and longevity. This barrel undergoes thorough testing, including magnetic particle inspection and high-pressure testing, ensuring top-notch reliability. It includes a 1/2x28 threaded muzzle fitted with a Forward Controls Design muzzle device, compatible with Plan B style suppressors for enhanced versatility.

Features:

• Chambered in 5.56 NATO
• 14.5” 4150 CMV barrel, QPQ finish pin and weld
• Mid-length gas system
• 1:7 twist rate
• 1/2x28 threads
• 14” L89 Free Float M-LOK Handguard
• Drive Lock system
• Forward Controls Design Muzzle Brake with Plan B compatible suppressor mount
• Black
  

For customization and accessory attachment, the upper features a free-float L89 M-LOK handguard with "Drive Lock" technology for enhanced stability. The top Picatinny rail provides ample room for personalizing your setup.