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Old November 21, 2008, 02:36 PM   #26
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Sure would like to know the brand of the plastic gun that failed after only 100 rounds, due to poor engineering.
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Old November 21, 2008, 04:08 PM   #27
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CNC produced 416 stainless triggers to replace the plastic triggers on Colt Mustangs, Mustang Plus II's, MK IV Government .380's and Sig P238's and P938's. Plus Colt Mustang hardened 416 guide rods, and Llama .32 and .380 recoil spring buttons, checkered nicely and blued.
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Old November 21, 2008, 06:33 PM   #28
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Thanks very much for all the information and discussion, it's been most helpful.

JohnKSa, you're right, the polymer is called Nylon 6, with a little carbon added. Spamanon, thank you for that Materials data website, it's come in VERY handy!

AlleyKat, your question "If you had all of that data, the math of which is probably above your head, as you admitted, what would you do with that data?" is a very pertinant one. My department has been discussing the idea of introducing pistol mounted lights for our issue duty firearm (for the record : a Glock 22, 3rd Generation) and there's been much discussion on the topic of frame flex and stoppages. I've been trying to find something quantifiable to work from.

Again, my thanks to all. The Quest continues.....
Ab honesto virum bonum nihil deterret
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Old November 22, 2008, 07:03 AM   #29
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Hahaha. I wouldn't judge real polymers by an el-cheapo.
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Old November 22, 2008, 10:38 AM   #30
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That brings up a good point to the 1911 guys why does most LEO's carry toy guns??
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Old November 22, 2008, 10:21 PM   #31
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That brings up a good point to the 1911 guys why does most LEO's carry toy guns??

They are cheaper.
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Old November 23, 2008, 06:02 PM   #32
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Its all about $$
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Old August 16, 2019, 03:39 PM   #33
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I just stumbled upon this thread in 2019. Over a decade later, I hope that the kind of comments I've read in this thread, bashing plastic firearms, have all been put to rest by now. It's vividly apparent that the individuals, back in 2008, pushing the "plastics are inferior to metal" opinion have/had zero education/experience in science and engineering fundamentals such as statics, dynamics, material sciences, chemistry, heat transfer, thermodynamics, etc. I'm still bewildered that, even by 2008, so many had never gotten beyond the 1980's skepticism of Glock's intro to the firearms world. Here, in good ol' today, where we know better, the list of manufacturers turning out polymer firearms is huge: Springfield, Walther, CZ, FN, HK, Smith and Wesson, Sig, STI, Kahr, Beretta, Ruger, etc. All the top makers have finally begun capitalizing on the fact that polymer indeed serves shooters very well, from personal defense to competition...and for more important reasons than profits. Introducing polymer into a pistol allows the weighting to be targeted/placed where it needs to be to optimize recoil control, which provides the shooter the luxury of more accurate rapid follow-up shots. But reducing pistol weight, in general, makes everything faster, and more comfortable for shooters of all types. Look at the number of manufacturers who are now making their metal slides lighter, and lighter, reducing the reciprocating mass of their automatic pistols. Less weight is not a bad thing, unless you're stuck in the 1980's where the only way to make a pistol accurate, and reduce felt recoil, was to make it as heavy as possible. Thankfully the gun manufacturers use a little thing called physics in their design process, which produces tangible, empirical data, rather than opinions. And now, we have companies like Sig progressing this materials optimization even further, with their tungsten-infused polymer, giving those who want the weight of an all metal pistol the recoil performance properties of a plastic frame. Thank you science and engineering for not leaving us stuck in the 1980's...or even 2008.
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Old August 16, 2019, 06:03 PM   #34
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Welcome to The firing Line!

Yes, much has changed in the last 10 years. And the changes continue. SIG is now announcing some versions of the P320 with "tungsten infused polymer" frames, for competition shooters who actually want the gun to weigh about the same as an all-steel one.

Bart Noir
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Old August 17, 2019, 04:53 AM   #35
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Welcome to TFL, LT130TH!

Let's let this one sink back to the bottom. If there needs to be a new thread about polymer frame flex, you're free to start one.
I'm a lawyer, but I'm not your lawyer. If you need some honest-to-goodness legal advice, go buy some.
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