RESONATOR 300BLK UPPER INTEGRAL SUPPRESSOR SYSTEM Manufacturer Model Number: YHM-7135 Manufacturer: Yankee Hill Machine Company Model: Turbo Integral Suppressor Caliber: 300 AAC Blackout Type: NFA - Silencer Item Type: NFA Finish: Matte Black Overall Length: 23" Weight: 4.38 lbs. Shipping Weight: 2.0 Feature: Integrated Turbo Silencer Feature: Pinned and Welded to 10" BBL Optic Adjustable Objective: false Optic Reticle Illuminated: false