Author Topic: CZ100 rear Sight Swap  (Read 2610 times)

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Offline xaztec

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CZ100 rear Sight Swap
« on: June 10, 2007, 07:27:02 PM »
Anyone have instructions on how to change sights?  I see the firing pin block is under the sight.  Is it difficult to get back in?  Should I use a brass punch or something softer?

Thanks,

Offline Old Coastie

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CZ100 rear Sight Swap
« Reply #1 on: June 11, 2007, 11:29:30 AM »
It is way harder to get the rear sight off than to put back in. First, the sight should be driven out from the right side of the pistol. The dovetail is slightly tapered. Right to left out is the ticket. Before you allow the sight to slide out completely, I recommend you put it in a plastic bag and then remove the sight. as you have discovered, the firing pin block, firing pin block spring and firing pin block detent are held in place by the rear sight. If the sight slips past the firing pin block detent, both it and the spring will end up where all small gun parts go, hence the plastic bag.

Once the rear sight is off, just start the new sight in from the left side until it is at the firing pin block spring and detent. Carefully push down on the detent with a small flat blade screwdriver until you can push the sight over the detent. Then, it is just a matter of sliding the sight all the way in.

If your sight is anything like mine was, you will have to beat the living begeebers (technical gun term) out of it. A brass punch is required to prevent marring the sight.

It really is easier than it sounds, so go for it. Just remember the plastic bag.

Good shooting,

Mike
Just because you're paranoid, it doesn't mean they're not really after you!

Offline xaztec

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CZ100 rear Sight Swap
« Reply #2 on: June 11, 2007, 01:26:54 PM »
thanks, it actually sounded pretty easy but I just wanted to make sure there were no surprises and to make sure I didn't screw up the adjustable sight taking it out.  

Do I need to locktite the new sight in or will it stay in place from pressure alone?

Offline Old Coastie

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CZ100 rear Sight Swap
« Reply #3 on: June 11, 2007, 04:48:29 PM »
Up till now my rear sight has stayed put with just a friction fit. A small dab of blue locktite on the right side bottom of the dovetail would probably be a good idea.

Good shooting,

Mike
Just because you're paranoid, it doesn't mean they're not really after you!

Offline xaztec

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CZ100 rear Sight Swap
« Reply #4 on: June 11, 2007, 05:58:29 PM »
Great, thanks a lot.

mbott

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CZ100 rear Sight Swap
« Reply #5 on: June 11, 2007, 07:33:14 PM »
Quote
Quote:
Right to left out is the ticket.


Since I don't make modifications to my guns, I'll ask this clarification.  I assume "right to left" applies when the top of the slide is viewed from behind the pistol.  Correct?  

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Mike

Offline Old Coastie

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CZ100 rear Sight Swap
« Reply #6 on: June 12, 2007, 01:44:06 PM »
Mike,

That is correct.

Have you done the trigger system fluff and buff on your 100? It is well worth the time and effort.

Good shooting,

Mike
Just because you're paranoid, it doesn't mean they're not really after you!

mbott

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CZ100 rear Sight Swap
« Reply #7 on: June 12, 2007, 03:23:23 PM »
Mike,

Not yet.  But it's in the plan for sometime soon.

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Mike