YHM is pleased to offer the Turbo® T K-RB Integrally Suppressed Upper Receiver Group. The Turbo® T K-RB Integral comes with a Turbo® T K-RB suppressor which is pinned and welded to a 11.5 5.56mm barrel. With a combined barrel/suppressor length of just over 16 this system only requires a single tax stamp to be purchased. Included is a lightweight M-LOK® Handguard YHM Mil-Spec A3 upper receiver and a specially designed gas block which reduces blowback and cyclic rates. – Does not include Bolt Carrier Assembly or Charging Handle. – Caliber: 5.56mm – Weight: 3.6 lbs. – Length: 23.5 – Diameter: 1.375 – Construction: 17-4 Ph SS/Cobalt 6 Blast Baffle – Decibel Rating: 134 dB – Full Auto Rated – Turbo® T K-RB Integral Suppressed Upper receiver group contains: – Integral Turbo® Sound Suppressor Assembly – M-Lok® Handguard – Flat Top A3 Upper Receiver Assembly (YHM-100) – Low Profile Suppressor Gas Block (YHM-9389-SS) – Black Plated Gas Tube (YHM-BL-04A)