Dicks and Walmart both bought special runs of the MkII's without the AccuTrigger. Walmart hid that fact from customers by putting a trigger lock on the trigger that covered it up so that you couldn't see if it had the AT or not. It was a downright dirty as heck thing to do. They wouldn't remove the trigger lock so you could see either. I know Dicks had some of the same rifles but I didn't know they also hid the triggers from customers. If they told you it didn't have the AT then obviously they weren't hiding that fact from you.
I would NOT buy a MkII without the AT. Sure you can buy a MkII and add the Rifle Basix trigger on regular MkII models but I'm not sure it's even possible with the neutered models being sold by Walmart and Dicks.
Both companies proved they can't be trusted IMO when they did this. That's why I buy guns from a LGS if at all possible. I did buy a shotgun from Walmart a while back but I could see everything about it and I knew exactly what I was looking at. But for the most part I avoid dealing with either of those places for anything other than ammo and even then I try to find it elsewhere first. I'll even pay more for the same ammo before I give my money to Wally World or Dick Sporting Goods.