Vz58/Cz858 buffers

C

Canada Targets

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Saskatoon, Sk
Like many of you we are big fans of the cz/vz58 platform. The ammo is cheap, readily available in bulk, and the rifle is robust (no finicky little springs to deal with).

We had a chance to play with a buffer add-on for the cz/vz platform.

The buffer can be installed in less than 5min with no tools. Based on our tests with a shot timer the rate of fire increased by 40-50%. When we tested with a shot timer time between shots was between .07-.18 of a second with the buffer installed and without it was between .17-.28

The gentleman that presented these to us also says that it reduces felt recoil; but we don't find much recoil with the 7.62x39 to begin with and had no objective way to measure it. We were also told that it reduces gremlin issues but we haven't had many to begin with not did we have any during our tests.

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If you are interested click here

How to install:
 
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Mark Williams said:
There's one born every minute.
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Maybe. I'd like to try one, or hear a report from someone who made some more attempts at objective testing. I don't think battering or recoil is an issue, but it could conceivably reduce the cycling time. Might be a plus for competitive types. It might also reduce reliability.
 
Where is it made and what is it made from?
How long will it last before it breaks apart, ok with solvents or CLP?
Since it decreases cycle time, will it increase wear on parts, will it induce short stroking?
Do the Czechs or the Slovaks use this, has this been tested in the field, sandbox?
 
Great questions:

Where is it made and what is it made from?
It is a Canadian innovation, the gentleman that developed the idea is from Winnipeg. We have been told that it is a 65a durometer rubber.

How long will it last before it breaks apart, ok with solvents or CLP?
The material was selected due to its resistance to impact and oils. I can't promise you it won't break down over time but haven't seen any wear beyound a mark where the bolt makes contact, after 1,300+ rounds. We assume that everything will eventually wear out.

Since it decreases cycle time, will it increase wear on parts, will it induce short stroking?
We haven't had any more failures to fire/stoppages that could be attributed to the buffer. As to the long term use of the buffer because it cushions the bolt carrier instead of it slamming into the back of the receiver it would be likely that it would be the same or better than without; with the mag restrictions in Canada and our lack of access to full auto we can't give you 10k, 25k and 100k data.

Do the Czechs or the Slovaks use this, has this been tested in the field, sandbox?
To our knowledge it hasn't been used by the Czechs or in the sandbox.
 
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alpining said:
Maybe. I'd like to try one, or hear a report from someone who made some more attempts at objective testing. I don't think battering or recoil is an issue, but it could conceivably reduce the cycling time. Might be a plus for competitive types. It might also reduce reliability.
Click to expand...

I'd be willing to give it a try on the chance that it works but $30 is pretty steep for a little piece of rubber. At $10-15 I might give it a go. At $30, not likely. b:
 
I don't believe breakdown due to solvents would be an issue. My race sled uses the same material in the motormounts, and they're covered with oil and grime after a season of use, and I usually only take it apart enough to clean it every few seasons. No breakdowns there.
 
Worst that could happen is a feed issue due to the bolt not having enough forward momentum due to shorter back travel , don't think it would cause catastrophic damage or anything. If it hasn't had issues in 200 rounds of testing I'm sure the rifle functions fine with it.
 
The buffer is approximately 3/8" thick. We haven't had any issues with short stroking.

The increased cycle rate is happening because the bolt is essentially bouncing off of the buffer and then the springs take over to return it to a firing position.
 
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