Does anyone know wether the feedramps were the same for all 510 target masters. I believe there was a few diffrent sub models like 510a Mine has been missing since i was a kid and I'm getting to the point id like to get this thing back to its former glory. As soon as i can find an original stock and this feed ramp i plan on refinishing this wonderful little rifle. It has served me well so id like to repay it by fixing it up even if i have to have a new one milled out and pay a small fortune at the machine shop. I'll have to scratch the paint off to find out if there are any letters after the model number