I have one myself, and I can honestly say the GP100 is just heavier, but will operate and fire similarly. I actually prefer the security six to the gp100. It's like asking if you should trade in a 1980 Porsche for a 1982. There is a nominal difference, and at least you know the condition of the firearm you currently own and its history.
My first handgun was a Security-Six, and I traded it for a S&W model 19. I love my model 19, and want to get a couple more, but I really regret trading that Security-six. It shot just as well, and I miss it. I traded it in about 1988, and I still know the guy that has it. But so far he says he's keeping it.
If you "don't need the money" then hang onto the Security-six, and save up for the Glock. Eventually you'll have both.
I would keep it. I have mostly regretted selling or trading off firearms. The Security Six is a classic. I'd just save my money and look for a G19 when I was ready.
You don't need it?
Need has nothing to do with it when it comes to guns. If it did, I'd have an arsenal to get rid of as would many others.
Two is one, one is none.
"Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other."
"Guns are evil, guns are bad, wish I'd kept the ones I had!"
Hang on to it. I still cry about letting my Browning Hi-Power go.
The Security Six is a piece of cr#* gun, you should send it to me for proper disposal. LOL
Actually, there is no reason to get rid of the Security Six and replace it with an inferior caliber, the 9mm, in any gun. I like Glocks, have several of them, but I dearly love the .357 mag. cartridge and the Ruger revolvers, and Marlin rifles, that shoot them. If you absolutely feel an overpowering compulsion to get a semi-auto, get a Glock 23, same size as a G-19, but in .40 S&W, a much better cartridge.
Given the choice, I would prefer the Security Six over the GP100. When I was working before semi-autos became the rage, we were issued Speed Six 3" revolvers, a wonderful gun. I now have a GP100, but would gladly sell/trade it for a Speed Six or Security Six with 3" barrel. They will last just as long, and are much more comfortable to carry around all day long.
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IMO, I wouldnt sell any guns until we see how the current gun control insanity plays out. Plus, the security six is a Ruger classic. I say keep it
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In my life time I have given many guns away, to friends/family, (lot's to family), but never sold any that I liked......
There have been some that have come and gone, that I never liked much, so the desision was always an easy one.
If you like it,.. keep it,..... if you don't,... sell it.
Remember that prices will not go down, and avalibility may very well be limited very shortly.......
It almost brings tears to my eyes thinking about some of the different guns I have sold over the last 40 years or so. Glad you are keeping it.