numbers match?
 

Just out of curiosity, do the numbers on the stock match the gun. When you unscew the trigger guard, it then twists off. The front of the trigger guard is threaded into the receiver. Under the guard tang on the stock the numbers should match the gun. Probably will, but not unheard of for a stock to break and for someone to try and put another Parker stock onto a gun. And, often they do not fit. Easy to do, so take a look.