Carbon dummy suppressor CNC aluminium (6000 series) base and head (with Oring compression attachment), Carbon fiber body (1.5mm).   -Outer Diameter: 40mm -Inner Diameter : 37mm -Length : 115mm -Weight : 120 Grams -4 open cells acoustic foam insert rings (2 small, 2 large)* This suppressor muzzle attachment system by compression Oring allows the installation of a barrel spacer to use this item as a barrel extension (SBA-BBS-09 and SBA-BBS-12).