Since Glock does not make a longer magazine release for the G30/G30SF, you may not use an aftermarket one. Now the most rounds you may fire in one string is 11 rounds and there are no speed reloads, so a longer magazine release is not needed. You may use afternarket sights, but not lasers. You may use a Glock 4.5# connector, but not an aftermarket connector. All internals must be Glock.