Well a Gunner is a guy on a punt return on kick offs theres 10 guys that can make tackles the 11th normaly avoids any type of tackle cause kickers dont like to tackle

So yes on both kick offs and punts non gunners should be able to make tackles....but this is based off of my american football knowledge which in the past has shown GI and America Football are not the same

In another thread, I saw someone (might have been Guru) say that they were randomly chosen. I think we all "know" that Special teams will need revisiting even if Admin hasn't said anything yet.

You know the the kick returner can get past the gunner, the gunner may miss the tackle, that is why other players in other positions can take the kick returner down.