GM-22 22LR 1/2X28 SILENCER 12127 Manufacturer Model Number: 12127 Manufacturer: Gemtech Model: GM-22 Caliber: 22 LR Type: NFA - Silencer Item Type: NFA Finish: Matte Black Overall Length: 5" Weight: 2.5oz Shipping Weight: 1.0 Feature: .22WMR .22SHORT .17HMR .17HM2 Optic Adjustable Objective: false Optic Reticle Illuminated: false