I'm a 62 year shooter, handloader, and used to compete in bowling pin matches, NRA Hunter Pistol, and IHMSA 200 meter handgun matches. Since those days my eyesight has gone to hell of course. I am considering getting a Hi-Point carbine. How are the open sights on these? Is it a peep type sight? I would have to decide between a .45 acp or 9mm. I have a Colt 1911, and the dies for reloading. But I also like the 9mm as ammo is quite a bit cheaper. I would have to buy a set of dies for the 9. One question. As far as the 9mm and .45acp, which of these can the mags function in both the HP .45acp or the 9mm? Seems like HP would have made pistol and carbine mags interchangeable, and they might have sold a few more guns to owners wanting the set of both guns in the same caliber.