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  #1  
Old 09-26-2018, 10:18 PM
bernieb90 bernieb90 is offline
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Default Mossberg 930 Stainless Competition Piston Upgrade

Most 930 owners especially competition shooters know that frequent cleaning is needed to keep the 930 running properly. The dual ring gas piston has been said to trap carbon in the gas cylinder, and cause function issues if the piston, and gas system are not cleaned often. The fact that the Mossberg 930 is the only modern gas operated shotgun that uses a dual ring piston was a huge tip that maybe the anecdotal evidence was right.

Quite a few companies have emerged in recent years that produce products to improve the 930 reliability. They all succeed to various degrees. None have addressed the gas system issue directly. Until now. SBE Precision Products has just released The Mossberg 930 Stainless Competition Piston is a completely new single ring design using only the outer ring. The inner ring is replaced by gas grooves. Additional gas venting on the bottom of the piston reduces gas forced into the spacer tube. The result is reduced felt recoil, long cleaning intervals, and better scores on the course.





This is after 2000 shells. zero Cleaning, and zero malfunctions
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  #2  
Old 09-27-2018, 7:28 AM
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I don't see it listed on their site.
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Old 09-27-2018, 6:53 PM
bernieb90 bernieb90 is offline
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There is an ebay listing. It is new and isn't on the site yet.

https://www.ebay.com/itm/302874799533
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  #4  
Old 09-27-2018, 10:01 PM
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Interesting, I'd be interested if I had some feedback to confirm these claims. I've never shot 2000rds or of mine but I have slot 400 in one range trip without issue.
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Last edited by etwinam; 09-28-2018 at 6:59 AM..
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Old 09-28-2018, 6:35 AM
ChuckDizzle ChuckDizzle is offline
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Just for my own research I've gone 400 rounds without cleaning with my 930 shooting trap singles. No failure to eject yet, have had some sluggish loading, but that can't be blamed on the gas system. I'll try doubles next week to really see how she cycles.
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Old 10-10-2018, 4:45 PM
bernieb90 bernieb90 is offline
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Quote:
Originally Posted by etwinam View Post
Interesting, I'd be interested if I had some feedback to confirm these claims. I've never shot 2000rds or of mine but I have slot 400 in one range trip without issue.
There are some users on the Mossberg 930 Facebook group that are giving it positive reviews. The guy who did the initial testing has several thousand rounds on the piston with no issues.
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Old 10-10-2018, 5:41 PM
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-Tagged-


How many of you guys are experiencing rusting of the steel Gas Cylinder Bore? I'm running the OR3gun MST but if I let the gun sit a few days or more after a shooting session, I get rust in the bore.
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Old 10-10-2018, 6:52 PM
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Anyone want to sponsor one for me, I'll put a few thousand rounds through it and give an update
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Old 10-10-2018, 7:14 PM
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I have the "Duck Commander" 930[discontinued?]. Now, I only have about 1800 rounds thru it, but, I've not encountered any rust, or hanging up issues with it. Probably cleaned it after every 400 rounds. Basic cleaning. No issues.
This has been with Wal-Mart target loads and your standard upland bird loads.
Nothing heavy, as I do not shoot those.
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Old 10-10-2018, 7:17 PM
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Quote:
Originally Posted by bernieb90 View Post
The result is reduced felt recoil, long cleaning intervals, and better scores on the course.
Explain how it improves your scores on the course? Is the 930 so slow that true pairs are delayed because of the action? That makes no sense.
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Old 10-10-2018, 7:27 PM
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meno377,
Yeah, not too sure about that either. While I'm not a competitive shooter, I have had zero problems at the trap range or in the field with my 930. I dunno, mine seems to function properly.
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Old 10-10-2018, 10:56 PM
bernieb90 bernieb90 is offline
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Quote:
Originally Posted by meno377 View Post
Explain how it improves your scores on the course? Is the 930 so slow that true pairs are delayed because of the action? That makes no sense.
For multi-gun shooters in timed shotgun events less recoil means getting back on target faster. We are not talking pairs but sustained fire at multiple targets. Sometimes the difference between places can be fractions of a second so any advantage no matter how small can help. We are also talking people that can fire 200 shells in a day of competition but go through 500-1000 or more in training in the weeks before. For the occasional shooter, or hunter this isn't going to be a huge benefit, but for high volume shooters it is a big improvement over stock.

Last edited by bernieb90; 10-10-2018 at 11:05 PM..
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  #13  
Old 10-10-2018, 11:22 PM
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Quote:
Originally Posted by bernieb90 View Post
For multi-gun shooters in timed shotgun events less recoil means getting back on target faster. We are not talking pairs but sustained fire at multiple targets. Sometimes the difference between places can be fractions of a second so any advantage no matter how small can help. We are also talking people that can fire 200 shells in a day of competition but go through 500-1000 or more in training in the weeks before. For the occasional shooter, or hunter this isn't going to be a huge benefit, but for high volume shooters it is a big improvement over stock.
For real high volume shooters, they will more likely pick another autoloader.
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  #14  
Old 10-11-2018, 5:25 AM
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Hmmm - OP is sort of sounding like he may be connected to/associated with the manufacturer of this product. If so, that would be a violation of Calgun's Vendors Rules.
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