SKU: EFBU30010
UPC: 729205508325
MPN: BU-300-10
The Tacfire AR-15 Complete Upper .300 Blackout 10" Barrel in Black is a fully assembled upper receiver assembly designed for operators building custom AR platforms from the ground up. This complete upper contains all the components necessary to establish a functional upper assembly—barrel, bolt carrier group, charging handle, handguard, and gas system—minus only the lower receiver, which remains your responsibility to source and assemble. The .300 Blackout cartridge delivers subsonic and supersonic capability in a compact platform, while the 10-inch barrel optimizes velocity in the subsonic envelope common to suppressed operations and close-quarters tactical applications.
The 10-inch barrel length positions this upper for short-range engagement and confined-space scenarios where maneuverability and balance outweigh extended-range performance. The integrated bolt carrier group eliminates guesswork in component matching and ensures proper function out of the box. Black anodized finish provides corrosion resistance and a low-visibility aesthetic standard across tactical platforms. This configuration ships ready to mount to any standard AR-15 lower receiver that accepts a direct impingement upper—no additional fitting or gunsmithing required for installation.
Builders and operators seeking to assemble a .300 Blackout upper without sourcing individual components benefit from the consolidated approach this complete assembly provides. Law enforcement agencies and tactical teams using suppressed carbines in entry operations or breacher roles find the .300 Blackout cartridge well-suited to controlled environments where overpenetration and noise signature demand attention. Competitive shooters building multiple platforms or those performing component-level customization can use this upper as a baseline, knowing the core components meet standard AR operating tolerances.
The .300 Blackout category remains purpose-built for suppressed fire and barrier-dependent accuracy at typical engagement distances under 200 yards. This Tacfire upper delivers the subsonic-optimized platform without premium pricing, making it accessible to builders balancing capability with budget constraints across tactical and sporting applications.
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