is this a stainless gun? my brother has one and hes been looking for the stainless swivel kit but i think its been discontinued. any sources of new old parts?

The greyhawk is stainless. I have 2 of them in 54 cal.I got my swivel kits from uncle mikes but that was several years ago.You might try fox ridge outfitters, that's T/C custom shop . I know you can get s/s or blued scope bases from them that fit the greyhawk.