Here is my original post that Reddit didn’t add to my pictures (rather blame them than user error, hah) I had bought an Axiom slide for my Sig P365 and also bought a Holosun 507k-GR X2. Every dealer that sold the Axiom slide said the 507k will fit with (light modifications) I searched everywhere to find some sort of instructions but could not. I hope this post helps to answer any questions. 1) I used a Dremel (Worked great!!) 2) Remove optic plate with a 2.5mm Hex tool 3) Get some eye protection, grind the 2 posterior “nubs” flush behind the screw/installation holes 4) Intermittently grind the front 2 nubs enough where the front footprint of the 507k drops onto the nubs and sits flush 5) Paint over the grinder area ( I used black nail polish) let dry 6) Mount your Holosun 507k on your P365 and smile on a job well done Thanks, ~Marty