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Old 02-10-2014, 06:30 PM   #1
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Firinng pin block spring

I recently got a used Kimber custom II that someone replaced the sights on. I'm guessing they either lost or left out the firing pin block spring when changing the rear sight. My question is this: will this hurt the gun or make my new (to me) Kimber unsafe? The firing pin block is still present, but just has no spring tension to hold it in the down position. Thanks in advance....
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Old 02-10-2014, 06:35 PM   #2
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Sounds like an unreliable internal status to me. I'd take it to a smith and have the spring replaced before firing.
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Old 02-10-2014, 06:36 PM   #3
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Welcome from Ohio
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Old 02-10-2014, 06:40 PM   #4
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Thanks for the welcome. Another "o" state here: Oklahoma.
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Old 02-10-2014, 09:40 PM   #5
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Another welcome from Ohio!! I don't know if Gator is right or wrong. Give the experts at Kimber a call. That's the safe bet!
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Old 02-11-2014, 03:26 AM   #6
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Welcome from NY. definitely call Kimber and get the correct info before shooting!!
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Old 02-11-2014, 06:40 AM   #7
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Originally Posted by Nineround View Post
I recently got a used Kimber custom II that someone replaced the sights on. I'm guessing they either lost or left out the firing pin block spring when changing the rear sight. My question is this: will this hurt the gun or make my new (to me) Kimber unsafe? The firing pin block is still present, but just has no spring tension to hold it in the down position. Thanks in advance....
That is known as the Swartz safety, without it if the gun is accidentally dropped and lands just right it could fire. Some guys remove the spring and plunger in the belief that it is one less thing to fail when the SHTF. If you do this and you're really familiar with the feel of your grip safety you may notice that it is a little easier to engage.
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Old 02-11-2014, 01:29 PM   #8
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I called Kimber today and described the problem? Anyway, very good customer service and the spring is on it's way.
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Old 02-11-2014, 02:35 PM   #9
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I should have mentioned that if you have a Kimber with "II" in the name you have the Firing Pin Block safety added. It's a version of an old 1930's design called a Swartz FP block, intended to prevent the firing pin from moving forward under inertia from being dropped or something. It is deactivated by a plunger in the frame when the grip safety is depressed. The only models still made without it are the Super Carry, Master Carry and the Classic Carry Pro.


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Old 02-11-2014, 05:49 PM   #10
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It is just a custom II. Plain and simple. But I really like it. According to internet lore, many people have removed this system altogether and it seems to have no ill effect on performance. I'll probably put the spring in when I get it, but I have close to 120 problem free rounds out of it as of today.
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