You may swap the uppers, but you may have ejection issues as the ejector (which is in the frame) is different between the 9MM and .40 cal. I would try it a few time before shooting in a match. But remember, if the gun going malfuction, it will do it at a match!:upeyes:In GSSF competition can you swap uppers between classes? Say shooting a G34/35 in Comp and then swapping to a 17/22 upper for AmCiv etc?
Scott
You should be fine as long as the two guns are the same caliber and they are both legal in the division in which you want to compete with them. I looked in the Glock Report and didn't see anything that lead me to believe it was illegal to due that. Just be careful WHERE you change uppers. Remember you can only handle your gun on the firing line and in designated safe areas.Thanks Dan (and all). My particular situation would be a G35 swapping in a G22 upper, all .40 in this case.
Scott