The 75 that I had years ago didn't have any. They were just trays that slid out and others that I have seen were also devoid of any as well. I believe one of our members has recently acquired one. What say you Rocky??
If you are intent on putting some in, one type of stay that was found in cylinder cabinets was rather simple but effective. It swiveled up wards when putting the drawer in and had a hook that caught the back board of the drawer to prevent it from being pulled all the way out. The ones I have on my cabinets are metal and I will try and get a good shot of one and post it here for you.