AXG Scorpion with PMM micro comp and barrel combo. Only adds 1/2 inch to slide. Has both factory magazines and a Sig 21 round mag. This was sigs first custom works pistol. Aluminium frame feels amazing, reminds me of the P226. RMR is mounted with a very thin plate to fill in the gaps from factory optic cut size. Factory barrel also included. I am missing the factory optic cut cover. They are $30 on sigs website. Let me know if you have any questions. 210668446six