The SilencerCo Omega 36M features a two-piece modular design with fully welded Cobalt 6 and Inconel core for extreme wear resistance. Titanium outer tube with lock-ring reduces weight. 1.57 inch diameter with black Cerakote finish. Ships with Charlie ASR mount. Compatible with all SilencerCo Charlie style mounting systems. Updated Charlie front cap allows tool-less removal. Note: If this product is reflected as in-stock it means it's either physically in-stock or allocated and available (serial number is assigned) at my distributor