I just aquired a security six with a 4 inch barrel, problem is, it is a sn 150 and i can find no grips for it. The Herrett grips that were on it are too big and cumbersome and im looking for something to fit my hand better. Does anyone know where i can find such a rare item? I would like to start using it for my carry weapon, but the grips make it look like the previous owner was trying to make it look like a Trooper mk III. too big and punishing for my hand