They work perfect. About the only option other than making one yourself.
I have about 5 of them currently, using in various calibers with no issues.

I even have a couple I use with a repeater action in a stock inletted for a single shot(target action). All you have to do is round the sides off so it closely matches the round contour of the action and it fits just fine. I do mine with just a slightly loose fit when put in the stock, so I know it isnt causing any fitting issues between action and stock.
They will also work with a dbm stock. Simply Just install the follower and leave out the dbm mag. The stock/mag frame holds it in place, with just a slightly loose fit.