Para-Bellum Modular HybridCore® Version-2 Silencer Designs for Automatic fire suppression for standard calibers ranging from 5.45x39 - 5.56x45 Silencer Dimensions: Length: 235 mm Diameter: 50 mm Weight: 560 grams Material: Titanium, Stainless Steel Noise Reduction Level dB* : 28 – 32 dB Muzzle Threads: 14x1 mm LH 24x1.5 mm LH 1/2 - 28 5/8 - 24 18x1 mm * Depending on Caliber and Barrel Length