For 2010, Mossberg is introducing an adjustable trigger for their pump shotguns (models 500, 535, 835) in the turkey, slugster and turkey/slug combo models.
Like the Lightning bolt action rifle trigger, this shotgun trigger is fully adjustable from 2 3/4 to 7 lbs. According to the manufacturer, it's rifle-like and creep free.
BTW, the slug barrels are no longer ported but are fluted (@ least in the pics I saw).
Just thought some folks here might be interested.
Jim