Author Topic: O rings for dry fire?  (Read 1394 times)

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Offline Bench

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O rings for dry fire?
« on: October 29, 2019, 11:21:06 AM »
There's a new to me CZ P09 in my "dry fire range" as I get it worked up for USPSA. In one of the many Youtube videos I've been watching to get up to speed with this pistol one presenter mentioned that O rings were used as he was going to dry fire repeatedly throughout the video. That was the only mention. So, are o rings necessary for preserving this pistol since I usually do quite a bit of dry firing? If so, what's the placement...over the firing pin to prevent the hammer striking the firing pin?
Never
drive your gun...
Faster
than you run.

Beretta 92G, CZ P09, M&P 9 Pro...but can't run vary fast...any more!

Offline Rmach

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Re: O rings for dry fire?
« Reply #1 on: October 29, 2019, 11:42:50 AM »
It saves/prolongs the firing pin retaining pin. Install the #83 O-ring in the hammer channel.
CZ Shadow 2 Orange, CZ Shadow Orange (Aussie model), S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Bench

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Re: O rings for dry fire?
« Reply #2 on: October 29, 2019, 01:55:34 PM »
Thanks Rmach, I've noticed a bit of marring on the retaining pin already. Time to get some #83's!!
Never
drive your gun...
Faster
than you run.

Beretta 92G, CZ P09, M&P 9 Pro...but can't run vary fast...any more!

Offline Tok36

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Re: O rings for dry fire?
« Reply #3 on: October 29, 2019, 03:10:38 PM »
Will work for CZ pics! (including but not limited to all CZ clones)

Offline RoverSig

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Re: O rings for dry fire?
« Reply #4 on: October 29, 2019, 03:16:14 PM »
Thanks for the OP asking the question and for the responses -- the picture says it all.  As a new CZ owner I have been wondering about this myself.  Looks like a good idea that won't cost much money at all.   Thanks.

Offline Bench

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Re: O rings for dry fire?
« Reply #5 on: October 29, 2019, 07:15:06 PM »
Since we're kind of snowed in here today (9 degrees w/ -7 wind chill) I wasn't able to get out for some O rings but did cut up some higher durometer silicone sheet ~1.5mm thick in a rectangular shape to fit inside the hammer channel and cut out a "round" area to releave the firing pin protrusion/bump. Seems to be working just fine giving a cushioned hammer stop.
Never
drive your gun...
Faster
than you run.

Beretta 92G, CZ P09, M&P 9 Pro...but can't run vary fast...any more!

Offline Tok36

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Re: O rings for dry fire?
« Reply #6 on: October 29, 2019, 07:28:44 PM »
Since we're kind of snowed in here today (9 degrees w/ -7 wind chill) I wasn't able to get out for some O rings but did cut up some higher durometer silicone sheet ~1.5mm thick in a rectangular shape to fit inside the hammer channel and cut out a "round" area to releave the firing pin protrusion/bump. Seems to be working just fine giving a cushioned hammer stop.

Sounds adequate to me, i have seen a few folks use disposable ear plugs in a pinch.
Will work for CZ pics! (including but not limited to all CZ clones)

Offline Bench

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Re: O rings for dry fire?
« Reply #7 on: October 29, 2019, 08:53:57 PM »
LOL, thanks...what ever works I guess!!
Never
drive your gun...
Faster
than you run.

Beretta 92G, CZ P09, M&P 9 Pro...but can't run vary fast...any more!

Offline igolfat8

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Re: O rings for dry fire?
« Reply #8 on: October 30, 2019, 08:45:10 PM »
Thanks for sharing a great idea.

Offline punisher12b

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Re: O rings for dry fire?
« Reply #9 on: February 14, 2020, 09:17:09 PM »
Since we're kind of snowed in here today (9 degrees w/ -7 wind chill) I wasn't able to get out for some O rings but did cut up some higher durometer silicone sheet ~1.5mm thick in a rectangular shape to fit inside the hammer channel and cut out a "round" area to releave the firing pin protrusion/bump. Seems to be working just fine giving a cushioned hammer stop.

Sounds adequate to me, i have seen a few folks use disposable ear plugs in a pinch.

i do this all the time.

Offline George16

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Re: O rings for dry fire?
« Reply #10 on: February 15, 2020, 11:13:25 PM »
I bought my O-rings from this guy on eBay.

https://www.ebay.com/itm/FDA-SILICONE-O-RINGS-106-QTY-100-3-16-ID-X-3-8-OD-/200381150342

$6.23 shipped for a package of 100 and he ships fast.

Offline LeeM

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Re: O rings for dry fire?
« Reply #11 on: February 19, 2020, 12:56:50 PM »
Thanks for the tip! I went to HD and picked up a pack of ten for less than $3 out the door. Least expensive add-on I've found.

Offline Rmach

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Re: O rings for dry fire?
« Reply #12 on: February 19, 2020, 01:12:36 PM »
I picked mine up at HD too.  I wish there was a way to keep them in the channel a little bit better.  Manually cocking the hammer a few times causes the O-ring to fall out.
CZ Shadow 2 Orange, CZ Shadow Orange (Aussie model), S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Hammer Time

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Re: O rings for dry fire?
« Reply #13 on: February 19, 2020, 01:15:25 PM »
I picked mine up at HD too.  I wish there was a way to keep them in the channel a little bit better.  Manually cocking the hammer a few times causes the O-ring to fall out.

I find that a section of foam ear plug tends to stay in better than o-rings for repeated dry firing.

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Offline Rmach

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Re: O rings for dry fire?
« Reply #14 on: February 19, 2020, 01:24:30 PM »
I picked mine up at HD too.  I wish there was a way to keep them in the channel a little bit better.  Manually cocking the hammer a few times causes the O-ring to fall out.

I find that a section of foam ear plug tends to stay in better than o-rings for repeated dry firing.

You are correct, thank you!. Just now, I used scissors to cut a ~1/8" thick piece from one of my foam earplugs, put it in the channel and manually cocked the hammer about 25 times with no plug falling out. Thanks again for the tip.
CZ Shadow 2 Orange, CZ Shadow Orange (Aussie model), S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.