I don't think so, if i remember correctly theirs 3 'vents' in front of the foresight and behind the 'end' of the barrel so any silencer/moderator fitted would be useless.
I suppose it could be possible to machine an adaptor similiar to those for the walther CP88, but would need to make sure it didn't foul the cocking action.
Why do you feel the need to do this? i find mine is quiet enough, alot quieter than my CO2 pistol?
We may dance with the devil, but its always to his tune.
BSA Meteor.22
BSA Lightning .177 SFS 2-StageTrigger and Tune
Walther CP88 .177
Weihrauch HW40PCA .177
Bruni Action Takedown .177 Project
Weihrauch HW45 .177 dual power