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PC 9 Problems

This is a discussion on PC 9 Problems within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Ok well when I first saw the PC9 come into the store back in August and found it would run Glock mags it was a ...


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Old December 2nd, 2018, 09:36 PM   #1
 
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PC 9 Problems

Ok well when I first saw the PC9 come into the store back in August and found it would run Glock mags it was a easy decision to buy one to use with my Glock pistol in the Steel Challenge Competition. So I put my Vortex Red Dot on it and went and zeroed it. I was impressed with the accuracy. Since I work at the range and the steel was set up needless to say I got some practice in. My partner I work with liked it so much he bought one also. Well then came our first competition. After the first string of 5 targets and on the very next string it stove piped on me. I fought it for the next 5 stages and it never ran more than 3 rounds with out a malfunction of some sort. Mostly stove pipes, FTE's and FTF's. Very frustrating to say the least. My fellow PC9 shooter's rifle started doing the same thing on about the 3rd stage. When I got it home and took it apart I found the bolt face had a piece broken off. So I called Ruger and they sent me another along with the pins that hold the bolt head in. A thorough cleaning etc, I went to test fire again and it still stove pipes and it doesn't matter which ammo I use. After researching aggressively I found a few suggestions I will try. There is really very limited information on this rifles idiosyncrasies'. I will share one I found to be quite interesting which is, one gentleman who is an engineer that test rifles I will not mention said what he did for his was to take and old inner tube and cut two layers to fit behind the buffer. He said that this would give more time for the case to eject since the bolt return is very fast for this rifle. If this works it tells me the tungsten dead blow weight is just a hair on the light side. Now I know there are a lot of smart people that design the guns and I am no engineer but it always seems like it's the consumer that finds and eliminates all these little quirks. That's what Microsoft does, they put out a beta OS and let the consumer find the problems. I am not saying this is what Ruger has done but it is a new rifle and I have a lot of disappointed friends that are trying to compete with it right now and it is letting us all down. I tried to attach the bolt head picture but don't know if I did it correctly. Anyway I will try that suggestion and will post my results.
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Old December 4th, 2018, 07:11 PM   #2
 
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Yeah, mine was flawless for the first 800 rounds or so. I ran bullets in 115, 124 & 147. Glock mags in 10, 15, 17, 30 with and without extended base pads, as well as ATI and Korean mags. All ran great.

Now I'm at about twice that number of rounds through the gun, and it is a rare occasion for it to get through a full magazine without a stovepipe or a failure to feed. I don't know what changed, but something did.

I plan to contact Ruger and send it back...

Last edited by GarrettJ; December 5th, 2018 at 05:51 PM.
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Old December 5th, 2018, 04:26 PM   #3
 
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Check to see if your magazine stop/ejector is bent upwards. If you have jammed your magazine into position very hard it is likely bent causing malfunctions like mine did after letting someone else use the gun.
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Old January 27th, 2019, 07:35 AM   #4
 
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I started having stovepipes after 500 rounds. I am using the Ruger mag that came with the gun and other Ruger mags form my SR9. I completely took it apart and cleaned it and checked the ejector (it was not bent). Back to the range and still had the same problem with all mags and ammo. After reading what the OP said about putting some rubber strips behind the buffer I took the gun apart again. I tried putting the rubber strip I was using behind the buffer but it would not seat the way I wanted it to so I was sitting there thinking of how I could get it to stay in place. I was leaning back in my chair thinking when I saw some Velcro strips sitting on my bench so I cut one to size and stuck it on the back of the buffer then put the gun back together. I took the PC to the range yesterday and with every mag I had and a couple of different kinds of ammo it worked perfectly through 200 rounds. Now I'm not sure how long the Velcro will last but I'm planning on taking the PC apart around 500 rounds to see hows it's holding up.
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Old February 4th, 2019, 10:16 AM   #5
 
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PC9 stove pipes

I have had the same problem with mine. Called Ruger and they claimed not a known problem. Took the bolt out of the receiver and polished all surfaces on it that touch any other metal during cycling. Second range trip was better but stove pipes still happened. My casings don't fly anywhere near as far as pistol. I am wondering if the added weight in the bolt and the heavy recoil spring aren't part of the problem. The bolt isn't moving far or fast enough to achieve good ejection. Don't know what to try next.
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Old February 4th, 2019, 02:19 PM   #6
 
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Quote:
Originally Posted by Redhemi04 View Post
I started having stovepipes after 500 rounds. I am using the Ruger mag that came with the gun and other Ruger mags form my SR9. I completely took it apart and cleaned it and checked the ejector (it was not bent). Back to the range and still had the same problem with all mags and ammo. After reading what the OP said about putting some rubber strips behind the buffer I took the gun apart again. I tried putting the rubber strip I was using behind the buffer but it would not seat the way I wanted it to so I was sitting there thinking of how I could get it to stay in place. I was leaning back in my chair thinking when I saw some Velcro strips sitting on my bench so I cut one to size and stuck it on the back of the buffer then put the gun back together. I took the PC to the range yesterday and with every mag I had and a couple of different kinds of ammo it worked perfectly through 200 rounds. Now I'm not sure how long the Velcro will last but I'm planning on taking the PC apart around 500 rounds to see hows it's holding up.
Curious, which side of the velcro did you use, the hook side or the loop side?
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Old February 4th, 2019, 05:52 PM   #7
 
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I am have problems with my brand new PC Carbine stovepiping and I think I see something that is not quite in line with other guns. The ejector latch/catch has almost no lip on it. Can anybody measure theirs which is NOT having a problem and tell me what it should be? Mine is barely .012 - .015" deep with a very shallow slit for the rim. My other guns are monsters compared to this ejector. Any similiar issues? I am not having any failure to feed unless it is associated with a stovepipe.
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Old March 1st, 2019, 06:38 AM   #8
 
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I had similar problems with a new pc carbine. I sent it back to Ruger. They replaced the extractor, extractor spring, and bolt face. The weapon now runs flawlessly. I recommend just sending it back to Ruger.
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Old March 8th, 2019, 06:34 AM   #9
 
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Quote:
Originally Posted by coleusna06 View Post
I had similar problems with a new pc carbine. I sent it back to Ruger. They replaced the extractor, extractor spring, and bolt face. The weapon now runs flawlessly. I recommend just sending it back to Ruger.
Another easy fix is being certain the screws holding the receiver together are torqued to spec.
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Old September 23rd, 2019, 07:52 AM   #10
 
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Quote:
Originally Posted by marineimaging View Post
I am have problems with my brand new PC Carbine stovepiping and I think I see something that is not quite in line with other guns. The ejector latch/catch has almost no lip on it. Can anybody measure theirs which is NOT having a problem and tell me what it should be? Mine is barely .012 - .015" deep with a very shallow slit for the rim. My other guns are monsters compared to this ejector. Any similiar issues? I am not having any failure to feed unless it is associated with a stovepipe.
Reminiscent of the Charter Arms AR7, now the Henry Survival Rifle. Even Henry had to put on their website and one point that the AR7 was a failure and required a specific .22 ammo.

Well, I had the same problem as you with the Ruger PC9 and took my ejector latch out and it had only about .015" lip. I used a file and matched the latch length on my Ruger SR9 as close as possible. It helped, but has not solved the stovepiping completely. In addition to the latch there is a problem with (a) the bolt not cycling back far enough and (b) the cavity between the magazine and barrel (inside) having enough room to trap a 9mm casing.

Ruger can claim all they want that they have no record of the problem but that denial alone has me ordering an entirely different brand and caliber and selling this one to a guy that doesn't care. Yet.
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Old September 23rd, 2019, 08:28 AM   #11
 
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Waiting for McCarbo to come out with a 'buffer block'. Mine has run flawlessly but the block is getting hinkey.
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Old February 25th, 2020, 07:16 AM   #12
 
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M*CARBO now sells both a buffer pad kit and a hardened tool steel extractor. Mine were ordered yesterday. Others claim this solved their extraction issues.

I had no issues for the first 1000 rounds, then it began happening infrequently at first but at the worst moments in a USPSA PCC match. Now at close to 2000 rounds it happened on four of six stages last Sunday.

Others claim the factory extractor, which some of you describe as barely having enough rim to remove a casing, is made of inexpensive steel and wears out over time. That would explain my experience of increasingly frequent stove pipes and/or double feeds.

Here’s hoping the new parts make my PCC as reliable as it was when it was new.
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Old March 14th, 2020, 02:44 AM   #13
 
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Ruger PC9, be a little gentle

It is possible to slam a magazine up into the gun so hard that you bend the ejector up into the bolt. This happened to my son last weekend. The ejector is replaceable, but it will ruin your day. I'd say whoever started having stovepipes or ejection problems were probably having ejection problems, eventually from slamming the mags in place. Do yourself a favor, in competition, for subsequent magazines, leave one round out so the column of bullets can compress on a closed bolt. And take it easy. Also, buy a spare mag adapter so it is ready to go. The ejector clips into the mag well adapter. Either way you have to separate the stock from the receiver to fix either.
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Old March 14th, 2020, 07:46 AM   #14
 
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Update:

Installed the M*CARBO buffer set (new spring and padded end plate) along with the tool steel extractor and pins. Then ran my first USPSA match and had no mechanical malfunctions for the first time in months! No stove pipes or double feeds.

However, there were a few cranial malfunctions.....going just a little too fast.

Shortly thereafter I also installed the M*CARBO flat face trigger which reduced my trigger pull by 6 ounces, probably by changing the angle of pull and leverage. Chose not to get their trigger spring set. I have seen too many guys have a variety of malfunctions when they push the limits on trigger pull, lighter loads and recoil springs, etc.

Hopefully these changes will be durable in reliability and I will be able to avoid the mental errors next time, too.
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Old March 14th, 2020, 05:47 PM   #15
 
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Anybody who doesn't put at least the MCarbo extractor arm on their PC is just playing a waiting game until they visit Stovepipe City. It's the best part you could buy for the rifle.

I also suggested to Chris the owner that he look into developing a tool steel ejector arm for the mag wells. He said he'd look into it.

All his videos showcase how easy it is to disassemble the rifle down to it's bits and pieces. I really can't say enough good about the company.

MY PCC is sitting pretty right now. About the only thing I have on the agenda for it further is the Magpul stock in the fall. All my current attention is going into my first AR build.
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