Wanted to get my Gen 3 17l slide cut for optics. I called 2 places today and they say it can't be done because Glock took too much out of the slide because of its length and there isn't enough material. So now I am looking at aftermarket slides. Prices seem to vary greatly has anyone gone down this road with replacing a slide. Who are the good company's and are there any good slides at a moderate price? Thanks Sam