I purchased a 4200 Elite 2.5-X10 40mm scope on e-bay. The scope was listed as new and never mounted. Well when I mounted the scope it had over 1" parallax @ 100 yards. I returned the scope to Bushnell and to my surprise they fixed the parallax and returned it in 2 weeks @ no charge not even postage because the scope was an Elite 4200.
WAY TO GO BUSHNELL