(this is a idea of how to adjust the forend catch on a Beretta 692)
After Beretta made the wonderful 682 I purchased the 692 thinking it would be the next step of the evolution. I have not been impressed with the quality of the overall Gun but biggest problem has been the forend. First of all the torx head screws that holds the mechanism into the wood came loose, I cured this by using loctite. After Shooting 200 clays over 2 days the front end became loose but this time it was the catch. There are 2 grub screws in the forend 1.5mm key. I found that loosen one and tighten the other pivots the catch. I found loosen the back one and tighten the front reduced the play between the barrel and forend. I searched the web for several days trying to find a guide on how to adjust these grub screws but found nothing. Hope this helps others.