Can you imagine how much trouble a gas key coming loose would cause? I've put together a lot of AR15/10s over the years, and have seen only one gas key come loose - due to improperly staked key screws.
I have no problem with your use of fingernail polish on the 457 trigger pin - as long as it doesn't flake off over time, why not use it? There may be a Loc-tite product that's perhaps better for the application, but I don't know which one would be correct. I'd be concerned with a wicking compound like #290 weeping on into the trigger & locking it up on the pin. I used Loc-tite #609 to glue the two Shilen bbls into my 457 American & MTR, and haven't had any issues so far - did the American bbl job May 1 and the MTR on the 19th, so it's been around five months for both. Have to admit though, that I shoot my V-22s a whole lot more often than I have the two CZs, but after reading that Walther has been using a similar adhesive to glue bbls into receivers of some of their target rifles, I'm not worried about the longevity of #609. The problem I see with staking the trigger pin would be if it's over-done slightly, and someone tries to drive it out, it may do irreparable damage to the trigger housing. OTOH, I see little or no downside to the use of fingernail polish....
Hi Dennis,
When I emailed Dave, I told him that I did not use Loc-tite because of the wicking concern. As for the trigger pins, it only takes the smallest upset to retain the trigger pins and noting like the gas key needs. I did want to give Dave an alternative to the fingernail polish or E-clips. Something tried and tested. I really enjoy my MTR. It shoots on par with my V-22. I like the CZ so much that I just bought a Royal on Friday with the longer bbl. When I spoke with Dave, he told me that the springs he sells were custom made for size and spring rate. I will however look for a cheap replacement out of idle curiosity. When I originally changed out my spring, I wrote up a post about the perils of the task. While driving the pin out I bent a brass punch and was starting to bend a steel punch. The trigger pin in my gun was a heavy press fit. So as to not damage anything putting it back together, I chucked up the pin in my drill and reduced the diameter a couple thousandths with some 220 wet/dry. Just to a slip fit. Maybe over the years I have lost sight of how these seemingly simple things may not be so simple for others. It is difficult to know how has good ideas that work and how is just talking. That is one reason that I like to support my claim with some kind of rational, IE: staking the gas key. I like to give people the confidents to use an idea and not just follow it blindly.
chat soon
Shawn