O-ring size for dry firing a P-01

[jurek]

check this:
https://czfirearms.us/index.php?topic=95013.0

However, I'm not sure if O-ring is necessary with new guns...
I've been dry firing my 1911 without o-ring / snap cap / laser cartridge for last year and do not see any damages or changes with gun's functionality.

[Eddythedog]

Thanks for the link, makes a little more sense why there may be a question regarding any damage.  That being said, I have to think that the potential issues with the striker or striker retaining pin breaking are probably overestimated given modern metallurgy.

Perhaps an annual inspection and replacement of the retaining pin may be in order.

[jurek]

Eddythedog, what pistol do you own?

[sberres]

Don’t try to overthink it.  If you are using a snap cap forget the o-ring thing. If you are not or don’t wish to use a snap cap (rimfire is an even better example), just pinch any smallish o-ring of 3/32 cross section and that’ll stay by itself into the hammer channel to prevent any strike of the hammer to the firing pin.  Doesn’t need to be in any particular position as any portion of it will cushion the blow.   Works for revolvers, great for rimfires, good for older guns that maybe have a more fragile firing pin or retainer, as well as modern CZ’s.
  Works great for practice, comparison, or post cleaning function checks.  Easy to do and dirt cheap.

[GLincon2]

From what I read here and researched on my own. On the. SP01 it has a fire pin Or retaining pin that could bend or break if dry fired too much. The shadow does not have this.
You can see the it on side. I am new to this also I might not have the names correct

[Eddythedog]

After a day of thinking about it, there definitely could be an issue with the retaining pin design of the P 01 (which is what I have) although in looking at the design of the firing pin it appears there is some slope on each side of the retaining pin ‘channel’ should alleviate some of the impact damage (I haven’t popped my firing pin out yet, comment based on a look at the image on CGW’s website of their extended firing pin).

Quick question - it appears that the O-ring is the easiest solution.  Does anyone have any experience using the O-ring with a laser cartridge?  Is there enough impact with the laser to get it to work or does the laser provide enough buffer to avoid the damage to the firing pin / retaining pin?

[cntrydawwwg]

For those wondering, this is a FP retaining pin with unknown unprotected dry fires. This is why an Oring or snap cap is preferred. YMMV.

[Walt Sherrill]

...From what I read here and researched on my own. On the. SP01 it has a fire pin Or retaining pin that could bend or break if dry fired too much. The shadow does not have this.

I'm unfamiliar with the Shadow models, so excuse my ignorance...

The Shadow models are all above my pay grade (now that I'm retired), so I've never really paid attention to them.  That must mean they have a firing pin stop (or plate).  I wish that were the standard practice for CZ, as it is for the Tanfoglio guns.  I'm sure the money CZ has saved in production costs has been offset by warranty repairs for broken firing pin retention roll pins.

[Earl Keese]

...From what I read here and researched on my own. On the. SP01 it has a fire pin Or retaining pin that could bend or break if dry fired too much. The shadow does not have this.

I'm unfamiliar with the Shadow models, so excuse my ignorance...

The Shadow models are all above my pay grade (now that I'm retired), so I've never really paid attention to them.  That must mean they have a firing pin stop (or plate).  I wish that were the standard practice for CZ, as it is for the Tanfoglio guns.  I'm sure the money CZ has saved in production costs has been offset by warranty repairs for broken firing pin retention roll pins.

Same as a pre-b Walt. 

[jurek]

Does anyone have any experience using the O-ring with a laser cartridge?  Is there enough impact with the laser to get it to work or does the laser provide enough buffer to avoid the damage to the firing pin / retaining pin?

Using O-ring with laser cartridge doesn't make sense for me. Laser cartridge acts the same way as snap caps, so no other precaution is need.
I've been using laser cartridge (without o-ring) for last month (I'm not sure if this is enough time for tests) without any problems. My daily dry firing - between 600 - 800 lase shots, so looks I've already shot my laser over 20,000 times. Gun doesn't have any signs of damage.

[Earl Keese]

Does anyone have any experience using the O-ring with a laser cartridge?  Is there enough impact with the laser to get it to work or does the laser provide enough buffer to avoid the damage to the firing pin / retaining pin?

Using O-ring with laser cartridge doesn't make sense for me. Laser cartridge acts the same way as snap caps, so no other precaution is need.
I've been using laser cartridge (without o-ring) for last month (I'm not sure if this is enough time for tests) without any problems. My daily dry firing - between 600 - 800 lase shots, so looks I've already shot my laser over 20,000 times. Gun doesn't have any signs of damage.

The vulnerable part is internal, you wouldn't see signs of damage unless you remove the fprp. The problem with snap caps and laser cartridges is that the rubber "primer" collapses with use, so they need to be replaced regularly. I guarantee if you remove your oem fprp it'll show significant
signs of impact. Upgrading the pin is a must.

[jurek]

The vulnerable part is internal, you wouldn't see signs of damage unless you remove the fprp. The problem with snap caps and laser cartridges is that the rubber "primer" collapses with use, so they need to be replaced regularly. I guarantee if you remove your oem fprp it'll show significant
signs of impact. Upgrading the pin is a must.

I'm replacing laser cartridge every 2 months (I've been fry firing my 1911 before). I completely disassembled 1911 several times, no sign of extra wear on firing pin, just like after normal shooting.
It's not that I want to argue, I'm just saying. I think it may depends on your pistol quality and how you know your firearm.
Eventually all moving parts gonna be replaced... Oh. I heard that new flat recoil springs last forever... I'm wondering if i'st true... 

[Earl Keese]

The vulnerable part is internal, you wouldn't see signs of damage unless you remove the fprp. The problem with snap caps and laser cartridges is that the rubber "primer" collapses with use, so they need to be replaced regularly. I guarantee if you remove your oem fprp it'll show significant
signs of impact. Upgrading the pin is a must.

I'm replacing laser cartridge every 2 months (I've been fry firing my 1911 before). I completely disassembled 1911 several times, no sign of extra wear on firing pin, just like after normal shooting.
It's not that I want to argue, I'm just saying. I think it may depends on your pistol quality and how you know your firearm.
Eventually all moving parts gonna be replaced... Oh. I heard that new flat recoil springs last forever... I'm wondering if i'st true...

I don't follow, what does your 1911  have to do with this subject?  It doesn't have a firing pin retaining pin?
*original reply edited because I sounded like a jerk. 

[jurek]

I don't follow, what does your 1911  have to do with this subject?  It doesn't have a firing pin retaining pin?
*original reply edited because I sounded like a jerk. 

OK. That's my mistake. And do not worry about "sounded like a jerk". I'm ok with any words during reasonable discussion. 
I've missed part "retaining pin" and I was using my 1911 as example, because cannot tell anything about CZ yet. I've been dry firing my CZ for one month only.
Now I realized you mentioned this little guy:


So because I've been told to do so.. I've already replaced it with CGW one. I'v been promised it would work forever.