I have a ww2 black rubber butt plate that is about 1 inch deep that is a slip on with a flaming bomb- US, and a #, on it. I was told that it was for an -03-SPRINGFIELD, 30/06. my question is how do I slip it on. it has a lip on either side, of the inside. do I pull them up / out and slip / ride it over the stock? looks like if I did that they would look HOOKEY. if I pushed it on they would push inside against the stock?. I want to install it for purpose of display, not to shoot it with it on. any and all would be appreaciated. thanking you toot.