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AR15.COM
7/17/2026 4:57:36 PM EDT
[Last Edit: morglan][Edited]
First, pics:

Attached File


Attached File



Next the issues and questions.  Straight out of the box, no oil, cleaning, etc, first cylinder, .38, fired fine.

Second cylinder .357, fine.

Third cylinder,  .38, after the second round the 3rd and 4th were like a super fast double tap, but I wasn't trying.  Then I realized it wasn't locking when I cocked it after firing the first round because it did it again on the 5th and sixth rounds.

And then I could recreate the issue unloaded.  It's like I lose the first two clicks, hear the last two, and the hammer doesn't stay back.  The trigger seems to be locked all the way back during this.  

If, when I know I'm only getting the 2 clicks,  I pull the hammer back all the way and release it, it seems top jog loose the trigger again, and it will cock like normal on the next round. (I'm using snap caps.)


I did remove the grip and trigger guard the first time this happened, because I couldn't figure out how to get it unlocked. Removing the grip didn't release it, but the minute I removed the second screw by the trigger guard, it reset.

I put it back together, but it still seems to occasionally lock up.

I have not cleaned it yet, I'm heading out to spray it really good with CLP top see if that helps, before calling customer service.

Any advice?
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7/17/2026 8:23:57 PM EDT
[#1]
First thing I would do is completely disassemble the lockwork, check for burrs (lockwork and frame), clean, oil, then reassemble and check function.
7/17/2026 8:59:12 PM EDT
[#2]
All Piettas and Ubertis need to be deburred before shooting.
17 And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name.
7/18/2026 11:44:02 AM EDT
[Last Edit: Colt653][Edited] [#3]
Quote History
Originally Posted By Oldgold:
All Piettas and Ubertis need to be deburred before shooting.  are kits that need to be finished by the user
View Quote





7/19/2026 9:29:29 PM EDT
[#4]
Quote History
Originally Posted By Colt653:





https://i.imgur.com/99KcO8E.jpg
View Quote View All Quotes
View All Quotes
Quote History
Originally Posted By Colt653:
Originally Posted By Oldgold:
All Piettas and Ubertis need to be deburred before shooting.  are kits that need to be finished by the user





https://i.imgur.com/99KcO8E.jpg


I just picked up that exact model this weekend. So far the only thing I have had to do is to add some blue threadlocker to that cylinder pin retaining screw and get the cylinder pin adjusted so that it doesn't fall out while shooting. Granted I've only put about 40 rounds so far, but it's working fine. Maybe my luck will hold.
There are 100 kinds of people, those who can both understand binary and extrapolate from incomplete information…
7/22/2026 1:45:46 PM EDT
[#5]
A gritty mechanism is one thing, but failing to lock into full cock is (in my opinion) an unsafe firearm. It's heading back for repair today.
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7/24/2026 9:20:45 PM EDT
[#6]
Got a call from them today.

The tech said he was about to ship it back and apologize that he couldn't replicate the issue no matter how hard he tried.

He stepped away from his bench, and a co-worker was able to get it to malfunction.

The tech said he tore it down and couldn't find anything wrong. Out of curiosity he said he measured the trigger, and it was about a thousandth of an inch too big, and was getting hung up inside (randomly).

He filed it and reassembled, and said everything seemed to be working properly, but that he was going to take it out to the range to test fire it before returning it.

I'm glad I sent it in.
Facebook is the Walmart of the internet.
7/31/2026 1:25:02 PM EDT
[#7]
Got it back yesterday, and shot it today.  Much much better.  No more issue, and the action just feels a lot better than before.

Facebook is the Walmart of the internet.
8/13/2026 9:27:42 PM EDT
[#8]
Quote History
Originally Posted By morglan:
Got it back yesterday, and shot it today.  Much much better.  No more issue, and the action just feels a lot better than before.

View Quote
Excellent!  The real smart move is letting the tech deal with the one screw...THAT ONE SCREW (minimum) that Guido tightened down to 45 foot pounds instead of 14 lbf in during assembly.
"Such predicaments! I must forge ahead!"

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