Any details on the Glock 17 retainer? I just bought a Steyr 1911 minus the recoil spring retainer and cannot find one online.It's possible to make a spring retainer from a Glock 17 spring and retainer, the retainer would need to be cut to length to work in the Steyr Hahn. Of course, a hacksaw and a file is needed. I've done this myself and I'm no gunsmith, and it worked for me, but your mileage may vary. Proceed at your own risk. Good luck!