Product Features & Specifications

LBE Unlimited AR137RBK Ready Build Kit 13.7"

The LBE Ready Build Kit is a compact AR-15 upper build kit featuring a premium 13.7-inch Cold Hammer Forged (CHF) barrel, engineered for durability and high performance in a pistol-length gas system.Designed for AR pistol or SBR builds, this kit includes a complete upper receiver, free-floating handguard, gas block, gas tube, and CHF barrel.

With rugged construction and precision machining, it delivers a reliable, close-quarters AR platform ready for customization and field use.