LBE Unlimited AR75RBK 7.5-inch Ready Build Kit

The LBE Unlimited AR75RBK Ready Build Kit supplies the core components needed for a compact AR-15 upper built around a 7.5-inch barrel. It is intended for AR pistol or short-barreled rifle (SBR) configurations and is designed for reliable service in close-quarters and range environments. Components are finished and assembled to provide a user-ready upper that can be customized to individual preferences.

Key Specifications

• Caliber: .223 REM / 5.56 NATO.
• Barrel length: 7.5 inches.
• Barrel construction and finish: Cold Hammer Forged, Melonite finish.
• Product type: Kit (complete upper build).
• Fit: AR-15.
• Gas system: Pistol-length gas system.
• Bolt carrier group: NiB M16-style BCG.
• Gas tube and block: Pistol-length gas tube pinned to a low-profile gas block.
• Included accessories: Standard charging handle and A2 birdcage flash hider with crush washer.
• Upper assembly: Complete upper with dust cover, forward assist, and free-floating handguard.

This Ready Build Kit delivers a concise, factory-assembled upper foundation for compact AR platforms. With a hard-wearing CHF melonite barrel and a NiB M16-style BCG, it’s suited to builders seeking a durable, short-barrel AR that accepts further customization. The kit combines essential components for dependable operation and straightforward integration into pistol or SBR projects.