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RSR Part #: LUTHBAA3-L11 Manufacturer Part #: BAA3-L11

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Luth-AR, 11.5" Lightweight Barrel Complete Upper Receiver, 223 Rem/556NATO, Black Finish, 9" Palm Handguard Keymod, 1:9 Twist, Complete Barrel Assembly w/BCG, Fits AR-15


  • Available in 11.5"
  • 5.56 mm
  • 4150 Chrome Moly
  • Threaded Barrel - Thread Pitch 1/2 x 28
  • Gas Block Diameter .750
  • Gas Tube Length - Carbine
  • 1-9 RH Barrel Twist
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached

Product Description

The Luth-AR 11.5" Lightweight Complete Upper Barrel Assembly starts with a Luth-AR 11.5", 5.56mm Lightweight barrel made from 4150 Chrome Molly with a 1-9" twist mated to a Luth-AR A3 Flattop receiver which includes a Luth-AR bolt carrier, charging handle, forward assist and ejection port cover. The upper is then topped off with a Luth-AR lo-profile gas system and the Luth-AR ergonomic 9" Palm Handguard(R) with KeyMod slots and a Picatinny top-rail.