Just make sure you have some punches. Keep track of your smaller springs. Other guys on here are better at explaining than I am, but check out some JoeL videos. Even though its the P09, with the Omega 75, everything works about the same. The magazine break is a little tricky. After removing the bottom pin on your grip to release the hammer spring, keep pressure on that spring, using your fingers, pull the mag brake from the center inwards into the open grip (you already removed the grip panels to remove the pin). The mag brake ( its just a metal shim that sits between the hammer spring and the mag well) will pop out of the bottom, and you can slide it out of the way. Reassembly is the reverse. Just make sure you have pressure on your hammer spring and that you guide the bottom of the mag brake into the slot with 1 hand while with the other hand you keep the bend on the mag brake. It is really much easier than I explained here. I apologize if I confused you, and if you have more questions, just ask. If not me, somebody will answer. Good luck, and have fun.