I recently purchased this Perazzi stock on ts. Unfortunately ,I guess I didnt ask enough of the right questions. It was advertised as an MX 8 stock with type 4 forearm. I was told it came off an older MX 8. Both pieces were inexpensive. It does not mate up to the metal on my MX 8 . Appears to have come off a rounded receiver gun. Can anyone tell me what they think this is from , so that I can move it to someone who can use it ? If you have a use for the stock pm me . Thanks for any insight/info provided.