Hello all. I am new to this forum and I hope someone can help me with a magazine question. Back in the 90's I bought a new 4516 from the LGS. mainly because I wanted a 45 ACP. and this was the only ambidextrous one he had. It has been a great shooter and I would like to obtain a few extra magazines. I am just finding out that the -1 mags are very hard to find. Can anyone tell me the difference between the-1 and non dash mags. which are readily available? Anyone have experience with using a non- in a -1 pistol?