While adjusting the elevation on my PTR91 something came loose inside the drum, and now is very loose and wobbly. The stem inside the assembly will not stay in place. I used the PTR adjustment tool to do this with. I boxed the sight up and sent through insured U.S. Mail back to JLD enterprises with a note detailing what went wrong. Hopefully I will have the sight back in a couple of weeks, either repaired or replaced. Have any of you experienced this? Other than this I consider the PTR a fine weapon. I consider the sight problem a fluke.

Can't say I've any problems with my PTR91 yet........................Even after adjusting the rear sight with the adjustment tool. I switch between 100 & 400 meters every time I go out to shoot it, which is a least once a week.