trigger mechanism

Hi there I'm after options for adjusting. Or changing the trigger on this. Anyone got any info if it can be done please ? Or what swap out triggers are available

Hi all Love to camp hunt and fish! Am trying out a .308 CF2, having a bit of problem with trigger mechanism, bolt does not want to release to come out after much hunting around would like to thank this site for having a diagram of the trigger mechanism, thanks! I also love to re load .310...