MODX-9 9MM SILENCER MODX-9 Manufacturer Model Number: MODX-9 Manufacturer: SIG SAUER Model: MODX-9 Caliber: 9mm Type: NFA - Silencer Item Type: NFA Overall Length: 3.25" - 7.75" Weight: 5 - 8oz Shipping Weight: 1.0 Feature: Piston System Attachment Feature: 1/2X28 & M13.5X1LH Pistons Optic Adjustable Objective: false Optic Reticle Illuminated: false