Lot of advice but as you are very new to guns the sorting process beings with the following, not specific gun recommendations.
Type:
Revolver (easier to sort through due to common features to all). Good place to start unless you have a specific use profile that pushes you to a semi auto.
Semi Auto (more difficult to sort through due to the various types to sort through and types within types). Easier to conceal than a revolver and more ammunition in the double stack types (15-17 rounds of 9mm is common for a non concealed one though those can generally be carried canceled in most cases). Single stack flatter types common if concealed is an issue with fewer rounds.
What you plan to use it for from target shooting, concealed carry (CC) to home defense (HD)- and mixing of those types.
Do you want a couple different one because CC can mean too small for good target shooting or HD.?
Revolver:
Pull the trigger, it cocks the hammer, then releases the hammer and it goes boom. Called Double Action (Da) (cocks and fires), a bit hard to shoot well if new due to the heavy trigger pull (10 lbs or so)
Thumb back the hammer and you have a nice crisp trigger pull and it goes boom called SA. Good for target shooting. Unlike Semi autos they do not use the DA/SA designation as its is going to have SA anyway (down further). Can be confusing to sort though though much simpler in actual use.
Some revolvers are actually Double Action Only (DAO) as they have a chopped off hammer or concealed hammer. these are purely self defense and CC (concealed carry) though you can shoot them fine at a range for practice.
Semi Auto:
DA/SA: This emulates a Revolver in that you can cock the hammer with the trigger pull and it fires (after that it shifts to Single Action, ergo the name.
Most familiar if shoot revolvers. Complex can happen if you add in safety (S&W did a lot of that). Others like Sig have no safety other than the hard trigger pull of 10 lbs or a bit more (internal safeties that if you drop it it will not fire no matter what mode its in)
You can also cock the hammer and go SA. There is a de-cocker lever of some sort so that if you wind up with the gun in SA and want to stop shooting (or take it off SA ) it blocks the firing pin and drops the hammer safety (lot more to it depending on what make but the idea is it safes the gun).
Sig, HK and CZ are well known in that area, S&W was though I am not sure what they make, and you have Walther, Berretta in there.
Striker Fired: This is the in between school of safety. 6-8 lbs (more or less) of pull on the trigger and like a rifle it cocks the firing system and then release the firing pin (again very simplified and more complex with variations but in the end the result is the same though the various mfgs get there different way mechanically). These are easily seen as different form the SA/DA semi auto as there is no hammer or de-cocker.
In a way its like a light Double Action trigger pull. People like it or some can get used to it. Trigger is not nearly as good as a good SA/DA Semi Auto. Higher risk of an accidental discharge due to the much lower trigger pull (mitigated by various safety features). Normally not an issue but.
Glock would be the leader in this by numbers alone (and reliability), Springfield Armory with the XD, S&W with their MP series and Sigmas.
Type:
Revolver (easier to sort through due to common features to all). Good place to start unless you have a specific use profile that pushes you to a semi auto.
Semi Auto (more difficult to sort through due to the various types to sort through and types within types). Easier to conceal than a revolver and more ammunition in the double stack types (15-17 rounds of 9mm is common for a non concealed one though those can generally be carried canceled in most cases). Single stack flatter types common if concealed is an issue with fewer rounds.
What you plan to use it for from target shooting, concealed carry (CC) to home defense (HD)- and mixing of those types.
Do you want a couple different one because CC can mean too small for good target shooting or HD.?
Revolver:
Pull the trigger, it cocks the hammer, then releases the hammer and it goes boom. Called Double Action (Da) (cocks and fires), a bit hard to shoot well if new due to the heavy trigger pull (10 lbs or so)
Thumb back the hammer and you have a nice crisp trigger pull and it goes boom called SA. Good for target shooting. Unlike Semi autos they do not use the DA/SA designation as its is going to have SA anyway (down further). Can be confusing to sort though though much simpler in actual use.
Some revolvers are actually Double Action Only (DAO) as they have a chopped off hammer or concealed hammer. these are purely self defense and CC (concealed carry) though you can shoot them fine at a range for practice.
Semi Auto:
DA/SA: This emulates a Revolver in that you can cock the hammer with the trigger pull and it fires (after that it shifts to Single Action, ergo the name.
Most familiar if shoot revolvers. Complex can happen if you add in safety (S&W did a lot of that). Others like Sig have no safety other than the hard trigger pull of 10 lbs or a bit more (internal safeties that if you drop it it will not fire no matter what mode its in)
You can also cock the hammer and go SA. There is a de-cocker lever of some sort so that if you wind up with the gun in SA and want to stop shooting (or take it off SA ) it blocks the firing pin and drops the hammer safety (lot more to it depending on what make but the idea is it safes the gun).
Sig, HK and CZ are well known in that area, S&W was though I am not sure what they make, and you have Walther, Berretta in there.
Striker Fired: This is the in between school of safety. 6-8 lbs (more or less) of pull on the trigger and like a rifle it cocks the firing system and then release the firing pin (again very simplified and more complex with variations but in the end the result is the same though the various mfgs get there different way mechanically). These are easily seen as different form the SA/DA semi auto as there is no hammer or de-cocker.
In a way its like a light Double Action trigger pull. People like it or some can get used to it. Trigger is not nearly as good as a good SA/DA Semi Auto. Higher risk of an accidental discharge due to the much lower trigger pull (mitigated by various safety features). Normally not an issue but.
Glock would be the leader in this by numbers alone (and reliability), Springfield Armory with the XD, S&W with their MP series and Sigmas.
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