So the other day I picked up this cool little .22 from the original owner who bought it new from the army base he was stationed at. It is stamped US I do not have the box or any other paper work with it. The belly of the Barrel it milled out for weights (I have none) and it also in ported. My question is this how do I find counter weights for it ? And from the looks of it he loved this pistol and also told me he loved to shoot it.