LBE Unlimited AR137 13.7 Inch 223 Remington Ready Build Kit

The LBE Unlimited AR137RBK is a compact AR-15 upper build kit built around a premium 13.7-inch Cold Hammer Forged (CHF) barrel designed for durability and high performance in a pistol-length gas system. Suited for AR pistol or SBR builds, this kit comes complete with an upper receiver, free-floating handguard, gas block, gas tube, and CHF barrel. Rugged construction and precision machining combine to create a reliable, close-quarters AR platform ready for customization and field use.