I did a ton of research before getting my first handgun and decided on a Springfield XD 45 Tactical. Here's some general info I found, definitely research, read reviews, hold, and shoot if possible the top three guns you're considering.
- 9mm and 40 with have smaller handles than 45 acp
- 40 will be snappier recoil, 45 will be more of a push
- You have to decide whether you want DAO or DA/SA
- DAO (Glocks, XD's, some HK's, etc) will be the same trigger pull every shot and heavier than SA (mines like 5lbs)
- DA/SA You can carry cocked with the safety on, the SA will be a lighter trigger pull (say 3lbs) with the double action being heavier (say 5-7)
- IMO 9mm good quality hollow points like Golden Saber will have plenty of power still
- 9mm/.40SW/.357sig can usually convert from one to the other at least 40 to 357 and 9mm, sometimes you can't 9mm to .40 though with a barrel and clip swap, however you can't with .45acp to any of those without more work. For mine the only conversions available are .400 corbon and .460 Rowland. Although some prefer to just buy a seperate gun than a conversion.
- I liked the XD because its more ergonomic (for me) than the glock, has an extra grip safety, cocking indicator, round in chamber indicator, and a couple other things I liked over glocks.
- I'd look at a Glock, Springfield XD's, Smith and Wesson M&P's, FNH FNP's, HK USP, Steyr M40A1 or M9A1 (cool lesser known guns with great reviews), CZ 75's and 85's, Sig P226.
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