IMPULSE 9MM OLS 1/2X28 SIL Manufacturer Model Number: SD-122750-1-US Manufacturer: B&T Model: Impulse OLS Caliber: 9mm Type: NFA - Silencer Item Type: NFA Finish: Black Anodized Overall Length: 7.5" Weight: 8.8 oz. Shipping Weight: 0.8 Feature: Lightweight Construction Feature: Adjustable Point of Impact Optic Adjustable Objective: false Optic Reticle Illuminated: false