Sons Of Liberty Gun Works M4-89 300 Blackout Barreled Upper Receiver Group - 10.5"

The Sons of Liberty Gun Works M4-89 300 Blackout AR-15 Upper is a high-quality upper receiver designed for superior performance and reliability. It features a 10.5" 300 Blackout barrel with an A2 flash hider and pistol-length gas system. The barrel is a Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT barrel, offering exceptional durability and accuracy. With a 1/7 twist rate and six-groove design, it delivers consistent and precise performance. The barrel has a QPQ corrosion-resistant finish and a QPQ-coated M4 feed ramp extension for reliable feeding and extraction. Each barrel has undergone high-pressure (proof) testing and magnetic particle inspection (MPI) for superior quality and safety. The Sons of Liberty Gun Works M4-89 300 Blackout AR-15 Upper is built to meet the demands of serious shooters and operators, providing exceptional performance and reliability in any shooting application.

Features:

• High-quality upper receiver for AR-15 platform
• 10.5" 300 Blackout barrel
• A2 flash hider
• Pistol-length gas system
• Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT barrel
• Constructed from 4150 Chrome Moly Vanadium steel
• 1/7 twist rate with six grooves
• Threaded muzzle with 1/2-28 thread pitch
• .750 gas block journal with appropriately sized gas port
• QPQ corrosion-resistant barrel finish
• QPQ coated M4 feed ramp extension
• High-pressure (proof) tested barrel
• Magnetic Particle Inspected (MPI) barrel for superior quality and safety