Well got it and then didn’t fit my rail system I got key mod not m lock but it’s ok I’ll find some where to use them
Not a good suit for the SIG Keymod system (like MCX/MPX). Without removing the handguard and working from inside, you have no chance to install this add-on to the guard. Want to contact the seller, never got a reply, all messages unreaded since the first one sent days ago!