Ruger PC experience
- Thread starter Ganderite
- Start date
That is what has happened. I will make a few dummy rounds and play with it.
Are you saying that if I lock the bolt open before loading the mag, the bolt will then lock open after last shot??
If so, that sounds bizarre.
Report: I made some dummy rounds and tested with the bolt locked back before insertion. About 50% lock-back. 3 different brands of mag.
I tried again, inserting mag onto a closed bolt. About 33% bolt lock-back.
Last edited:
You mean the PCC, right? The PC9 was discontinued in 2006.
I think last-round-bolt-hold-open is a difficult feature to get to work properly with a straight blowback action. I'd expect it to be sensitive to ammunition (as above), lubrication, and fouling buildup in the receiver. Probably worth trying a complete disassembly and polish of the parts involved to help them run with less interference from friction.
Edit: Oh, and new and/or stronger magazine springs should also help.
Last edited:
Happens with all ammo. Some is mild, some is max, some is IVI military, some is CCI Blaser.
I had an idea that the mag was not lifting the bolt stop tab high/hard enough to life the bolt stop shaft.
Too test that theory, I put a little dab of epoxy on the lifter tab of a bunch of Glock mags, so that the bolt stop would be mor firmly engaged. Did not work.
I will remove the epoxy from the mags and try a bit of JB weld on the bolt stop tab, to make it engage sooner/harder.
My PC Carbine has had progressively worse last round bolt hold open not working. Always with Glock OEM 10-round native non-pinned mags - G5). PMAGs and ProMags perform marginally better but not by much. The problem is with the Glock mags/Glock magwell. When I had my Ruger magwell and the S9/SR9 mags, the last round bolt hold open worked 100% of the time flawlessly. Wish I hadn't have sold both.
I remember taking a photo of both of these a while back. Just found it on my computer. There is a bigger gap with the Glock magwell/magazine (first photo) than the Ruger magwell/magazine (second photo).
I remember taking a photo of both of these a while back. Just found it on my computer. There is a bigger gap with the Glock magwell/magazine (first photo) than the Ruger magwell/magazine (second photo).
Attachments
Sometimes the tab gets bent from aggressive mag changes. Bend it back down and the lrbh open works again. Some have replaced it with the one from the ruger magwell that they aren’t using. Worth a try. There was another thread on here somewhere about that.
Edit, my mistake, got mixed up with ejection issues, that is when the tab gets bent.
Edit, my mistake, got mixed up with ejection issues, that is when the tab gets bent.
Last edited:
I have found a solution that is working for now. I have not done any shooting yet, just paying with mags and dummy rounds.
In this picture, you can see how the mag follower lifts the tab.
Lifting that tab push the tab against the bolt stop arm, lifting it up to block the bolt from returning.
I find that the 3 differnt brands of Glock mags I have do not generate the same position on the tab. Some do not even get close to hitting it.
The solution was a dab of JB Weld. (Cheap epoxy would work, too) After it hardened, I shaped and smooth a bit with a file. The mag followers now hit the JB Weld dab, and lift the bolt stop tab sooner and harder.
I will report back after shooting. So far, it seems to work with the Glock brand mags. Does not work with Pmag or other mags I have.
In this picture, you can see how the mag follower lifts the tab.
Lifting that tab push the tab against the bolt stop arm, lifting it up to block the bolt from returning.
I find that the 3 differnt brands of Glock mags I have do not generate the same position on the tab. Some do not even get close to hitting it.
The solution was a dab of JB Weld. (Cheap epoxy would work, too) After it hardened, I shaped and smooth a bit with a file. The mag followers now hit the JB Weld dab, and lift the bolt stop tab sooner and harder.
I will report back after shooting. So far, it seems to work with the Glock brand mags. Does not work with Pmag or other mags I have.
Last edited:
I wonder if taking some pliers and bending that metal piece to force it closer to the follower would help with this. I am just afraid to do this since I have a propensity to make things worse.
I also wonder whether that follower has any more travel that is possible with a stronger spring in the Glock OEM magazine? Seems to be the Glock mag springs have less tension on the follower than the PMAGs/Pro Mags.
I also wonder whether that follower has any more travel that is possible with a stronger spring in the Glock OEM magazine? Seems to be the Glock mag springs have less tension on the follower than the PMAGs/Pro Mags.
It seems to me that the geometry of the Glock mags just does not suit the simple bent shaft design that works for the Ruger mag
2CentTactical
CGN Regular
- Location
- Nova Scotia
I had issues with my PC Carbine that when I torqued the mounting bolts it would not lock back. Here is what I did.
https://gunmagwarehouse.com/blog/ruger-pc-carbine-fixing-it-for-glock-mags/
https://gunmagwarehouse.com/blog/ruger-pc-carbine-fixing-it-for-glock-mags/
Ah, I think I understand now...makes sense...
Shall try the JB weld solution.
You may have a point about the Glock mag geometry. Because my FX9 has notorious last round bolt hold open issues...with...OEM Glock mags...
Given the Ruger and Glock inserts arre designed differently I not so sure it es much sense. My Ruger worked just fine with the Glock mags. I would be looking elsewhere for the problem and solution. The follower and springs would be where the solution lies. Have any of you who have the problem approached Ruger? That would be my first source. They may already know the problem and solution. I do not believe Ruger would have gone to the trouble of making adaptor kits for the Glock mags knowing they would not work
Take Care
Bon
Take Care
Bon
Last edited:
Bob, agree with you on there. What I want to test is if there is a marked difference in the use of say, the Glock OEM G3, G4 and G5 mags native 10 rounders. I only have the OEM G5 mags native 10 rounders.
Now that said...and I should have thought about this before - I also have an OEM Glock 33/10 fun stick that I bought from iRunguns. Obviously the mag would be different physically and the spring would be a well. Should try that to see if there is a functionality improvement. I have actually never used that mag for anything - bought it more as a novelty item when it was on sale.
theGazelle my FX9 locks back best with Korean 10/32 mags. None of my Glock 4 & 5 mags lock back the bolt on this gun. The OEM mag followers are different from the Korean mags. I'll take a closer look at the three OEM mags to see if there is a vissual difference between them.
Take Care
Bob
Take Care
Bob
Thanks. I don't own any Korean mags so my familiarity is very limited...what do you recommend and what retailers carry them?
I have been paying with some Glock 17 rounders pinned at 10, a Glock 10 rounder, two Korean, two Pmags and a pair of ETS Group clear plastic mags. Only one of the mags (in dry firing) will lock back reliably. A Glock 17 rounder.
When installing the mag (bolt locked back so you can see inside) the big difference I see is how high the mag goes into the action. Most don't go in far enough. You can push them a bit higher, but that is not where they latch.
I have made the lock open activator tab a full 1/10" deeper, and it still does not get pushed up enough by most mags.
I will try this set up on the range tomorrow.
When installing the mag (bolt locked back so you can see inside) the big difference I see is how high the mag goes into the action. Most don't go in far enough. You can push them a bit higher, but that is not where they latch.
I have made the lock open activator tab a full 1/10" deeper, and it still does not get pushed up enough by most mags.
I will try this set up on the range tomorrow.
climbingrocks
Member
- Location
- Halifax, NS
I have six well-loved glock ten round mags for my PC9 and I have never had a failure to lock open from any of them, so your mileage may vary.
