Here is my 1st of probably many stupid questions. I ordered a component set awhile ago and just got around to really looking at it. I just noticed that the trigger guard only has a front tab to pin to the stock and no back tab. How does one secure the back? Most I've seen have 2 1 front and 1 rear to pin. Oh yes it is my 1st attempt at a build, but I've watched about every DVD and have bought about every book/manual I can get my hands on for the last year. I've not see this. Any help would be greatly appreciated.