Out of stock
SKU: SOLGWM489UPPER-105-300
UPC: 785939519129
The Sons of Liberty Gun Works M4-89 10.5" 300 Blackout upper receiver group delivers compact rifle performance optimized for close-quarters scenarios where maneuverability and power intersect. This upper is specifically chambered for the 300 Blackout cartridge, making it ideal for operators who require a short-barreled platform capable of both subsonic and supersonic round compatibility without sacrificing ballistic efficiency.
The 10.5-inch barrel length positions the M4-89 as a capable CQB and home defense system while maintaining the handling characteristics expected in confined spaces and high-threat environments. At 3.5 pounds, this upper receiver group integrates into a lightweight platform without sacrificing structural integrity. The 300 Blackout cartridge's inherent versatility makes this configuration valuable for operators transitioning between different tactical environments.
Law enforcement special response teams, private security operators, and serious civilian shooters select 300 Blackout uppers for duty applications where intermediate-range power and suppression capability matter. The M4-89 configuration serves professional shooters who have moved beyond 5.56 platforms, providing a reliable option for vehicle-mounted, breaching, and urban patrol loadouts.
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