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Ruger P89 Question


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Ruger's warrenty department may only require you sent them the pistol's slide for the repair work so by all mean's ask them how they want you to package and ship the firearm. Also, the decocker picture look's like the traditional Walther design, Ruger uses a lot of casting's so it's more than likely the lever simply broke off. It's also not unheard of to only have the lever on the left side of the frame and a flat surfaced blank on the right. Not every pistol advertised as ambidexterious goes out of the factory that way, Ruger is a company know for doing it's on thing.

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It’s my understanding that M.I.M. produces part’s made from powdered metal with an end result of a sintered part requiring less finishing work and in the end cheaper to produce. Investment casting is from a molten metal to mold producing multiple parts but requiring clean up and finishing work. Am I wrong?

Investment casting is not M-I-M....It doesn't work like that.

One is used for cheap junk like toy cars

The other is used for brake calipers on airplanes

Sorry to sound nitpicky.

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Investment casting isn't limited to multiple parts, but has the capability to produce designs that would be almost impossible to machine. This is what makes the process so lucrative...if you can investment cast and save many machining steps you can save money. Depending on the target spec upon design...clean up and finishing is minimal....tolerances of 0.00X are possible.

The castings can be made of just about any material...plastic, ceramic, titanium, etc. By very nature of the process...a product can be made as strong, if not stronger than a forged part if someone does the homework on the metallurgy. That decocker lever is investment cast, the sprue is knocked off and it is polished....that is it. Much cheaper than starting with a block of steel and carving it away....just as strong.

The MIM is basically sintering. Basically vibrating powdered metal into a mold and melting it like plastic. It is cheap, easy, and gives metallic properties for plastic prices

So yes...you are right, but investment cast pieces don't just break off like a MIM part can

Edited by I_Like_Pie
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