So when I bought my M1A a couple of years ago I had to settle for a black synthetic stock. I really wanted the walnut stock. I bought a used M14 stock that was in ok shap for just $35 and my action and barrel fit just fine. The trigger assembly would not lock, it looks too short. So being the dummy that I am bought a brand new stock thinking that would do the trick. No such luck. I have the same problem. Is there a different trigger assembly for the the walnut stocked M1A’s or is the action different as well?? Someone please advise my dumb self and educate me on this.