Shimming a tristar over under question?

[longranger]

Anyone ever shimmed a stock on tristar over under

 

[huvrman]

Not over under but Tristar 20 gauge viper g2 turkey semiauto. Used all three supplied with the gun to bring my holosun down and over into perfect alignment.

 

[Uncle Jesse]

I'm thinking you'll need a gunsmith for a OU unless it's a Benelli