Does anyone know the manufacture of this bipod? I bought it about 15 years ago and lost any means of identification. Love the unit itself, but lost the set screw for the sling mount adaptor. I tied all hardware stores and fastenal and can't find a screw that will work instead of the original. So I'm hoping to get to find the manufacturer to order a new screw. Thank you for any help you can give me. Please let me know if pics didn't show up-this is my first post uploading pics.