Hello, Want to install a rail scope mount on my KWA MK II but the rear sight needs to come off so I can field strip the pistol. The rear sight looks like it may have a setscrew in it but it won't come out or turn. On real 1911's with fixed sights you can adjust them or remove them with a brass punch. With the KWA aluminum frame driving out the sight may not be a good idea if that's not how you do it. Anyone removed one of these or maybe on a different airsoft 1911? Could the setscrew be locktited in with heat type? Thanks.