How to available on line. You can modify this for a flush modification found on the Grendel Forums. When installing the magazine catch and spring, cut a tooth pick so it is the same width as the catch and use it to hold the spring onto the catch while installing them into the trigger guard/mag well. Engraving will NOT appear on the magazine well. We also have the Howa Extended Magzine Catch, Pete's Pillars for your stock bedding, and an Aluminum Magazine Base Plate.