Glock 17 Gen 5

snooker

snooker

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I have a glock 17 gen 5, and have a question, is it normal for the trigger to be able to be pulled on a cocked and empty gun with the with the slide locked open? I have never encountered this before, but then again, who pulls the trigger on an open slide? Something is going on, that shouldn't, I believe. This may belong in the gunsmithing forum, but thought I might get a quicker response here.
thanks.....
Dave.
 
Glocks are very very popular so there are a lot of different parts made for them, both (Glock) factory and aftermarket, including a lot of different parts that will affect the trigger characteristics dramatically. Did you get your Glock new (still in the factory box, directly from an authorized distributor or retailer), or did you get it used?
 
It was new and has approx. 2500-3000 rds. When cocked , the firing pin seems to be free floating, and upon removal, the plastic sleeve surrounding the back of the firing pin sits at a bit of an angle. (maybe it's worn). There seems to be something going on between the extractor plunger (on the under side of the slide) and the firing pin positioning.
I loaded 3 dummy rds in the mag. and racked the slide 3 times and they ejected as they should. But if one pulls the trigger on a dummy round, meaning the gun is now uncocked, with a round in the chamber, a condition that should only happen on a round that didn't go off, the slide can only be racked with EXtreme effort. This occurrence does not happen if there is no round under the extractor. This is something that has just happened upon the last cleaning , and I heard a "click" sound coming from the under side of the back end of the slide. I bought new an Advantage Arms 22 conversion kit and have put approx. 1500 rds through it. This condition does not occur when using it , and the gun functions as it should. I guess I'm looking for a gunsmith .........
thanks for your replies.........
Dave.
 
If you rack the slide fully back and forward, then lock it back, yes, you can still pull the trigger. I just did it on my own G17 gen5. Although it doesn't "feel" the same so I'm wondering if the trigger is pulling but nothing happening "behind the scenes".
 
mikeyb said:
If you rack the slide fully back and forward, then lock it back, yes, you can still pull the trigger. I just did it on my own G17 gen5. Although it doesn't "feel" the same so I'm wondering if the trigger is pulling but nothing happening "behind the scenes".
Click to expand...

You are correct in assuming that "nothing is happening "behind the scenes".

Again, this is completely normal, new or used.
 
Snooker, pulling the trigger with the slide locked back aside, is the firing pin channel liner ok? I would disassemble the entire slide and take a look around.

Working on a Glock rarely, if ever, requires a gunsmith. In fact, working on a Glock rarely involves tools, lol.

 
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snooker said:
It was new and has approx. 2500-3000 rds. When cocked , the firing pin seems to be free floating, and upon removal, the plastic sleeve surrounding the back of the firing pin sits at a bit of an angle. (maybe it's worn). There seems to be something going on between the extractor plunger (on the under side of the slide) and the firing pin positioning.
I loaded 3 dummy rds in the mag. and racked the slide 3 times and they ejected as they should. But if one pulls the trigger on a dummy round, meaning the gun is now uncocked, with a round in the chamber, a condition that should only happen on a round that didn't go off, the slide can only be racked with EXtreme effort. This occurrence does not happen if there is no round under the extractor. This is something that has just happened upon the last cleaning , and I heard a "click" sound coming from the under side of the back end of the slide. I bought new an Advantage Arms 22 conversion kit and have put approx. 1500 rds through it. This condition does not occur when using it , and the gun functions as it should. I guess I'm looking for a gunsmith .........
thanks for your replies.........
Dave.
Click to expand...
When cocked , the firing pin seems to be free floating (The firing pin block should arrest forward movement of the firing pin, but only if the trigger bar is not lifting the block. If the trigger bar is in the forward (fired) position, than it's passed the block. Once the pistol is fired, the firing pin becomes free-floating. If you pull it back, the block then re-engages. If the slide is open, the firing pin is free-floating.), and
upon removal, the plastic sleeve surrounding the back of the firing pin sits at a bit of an angle (Normal)....
I loaded 3 dummy rds in the mag. and racked the slide 3 times and they ejected as they should. But if one pulls the trigger on a dummy round, meaning the gun is now uncocked, with a round in the chamber, a condition that should only happen on a round that didn't go off, the slide can only be racked with EXtreme effort. (Degree of effort is subjective. A Glock slide with the striker forward is going to be heavier than when the striker is held to the rear, because that's one less thing, but... in my experience, 'EXtreme effort' is often attributable to faulty ammunition.)
This occurrence does not happen if there is no round under the extractor. (I question the 'dummy rounds' - did they fall freely into and out of a 9mm case gauge? If you have not got a case gauge with which to test, did they fall freely into and out of the barrel's chamber?)
This is something that has just happened upon the last cleaning and I heard a "click" sound coming from the under side of the back end of the slide. (You're aware, no doubt, of the advice in the Glock owner's manual - i.e.: what to do and what not to do with your Glock - and Glock's advice to not disassemble the slide or the frame assembly, and to seek the services of a certified Glock armorer instead.)
I bought new an Advantage Arms 22 conversion kit and have put approx. 1500 rds through it. This condition does not occur when using it , and the gun functions as it should. (When fully forward, your 9mm barrel is locked into your slide; it is a 'locked breech'. Unlike your 9mm slide and barrel, your Advantage slide and barrel are unlocked; it is an 'unlocked breech', a 'blowback' action. No surprises that an 'unlocked breech' is apt to feel more smooth when compared to a 'locked (and unlocked) breech'.
I guess I'm looking for a gunsmith (The Glock is a relatively simple platform. If you wish, you can seek the advice of a certified Glock armorer. If you do not have available to you a certified Glock armorer, a reasonably knowledgeable individual might be able to trouble-shoot your pistol and ammunition. Frankly, I'm wondering about your 'dummy rds'. If, however, they fall freely into and out of a case gauge (or the barrel chamber), and the barrel's chamber is clean, that variable might be ruled out. Beyond that, if you read a few books about firearm design (which can be pretty complex, but with common themes) and watch enough videos about Glock mechanics (which are pretty simple), you can figure it out yourself as well.)

To get started, I suggest that you read (or re-read) Charlie Cutshaw's book, Tactical Small Arms of the 21st Century.
 
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Thanks Wendell, and 4nt0
I didn't know free floating firing pin and plastic sleeve angle was normal.
My dummy rds. all pass the "plunk" test. The Glock has the tightest chamber of all my 9mm.s
EXtreme effort = pushing down on the chamber of the barrel to get the breach unlocked while attempting to rack the slide.
After many attempts I found that turning the pistol sideways (think "gangster" style) the breach would unlock normally.
The difference between the 9mm slide and the (blow back) 22 slide is something I should have realized, but didn't until you mentioned it.
I think the locked breach is something that is staying locked after it should be released. Obviously, the position of the pistol shouldn't matter whether it is locked or not locked. This all occurred after last cleaning, and is confounding me.
thanks for your very detailed reply.
Dave.
 
4nt0
I missed your comment re; the firing pin channel, and yes it's clear.
My concern is if a round did not fire for any reason (I've seen primers that have needed a second hit) ( maybe 1 in 1000)
I'm left with a possible loaded live round in the chamber that cannot be racked out easily, or at all.
When this first occurred with a dummy round I was able to pull the slide back enough to pull the slide release levers on each side to remove the slide from the frame. and then carefully remove the chambered dummy rd. once the barrel unlocked.
Don't want to try this on a possible live rd.
Hopefully I've explained whats happening. Simple terms; the breach doesn't unlock when it's supposed to.
 
I think I understand the problem. Does the same thing happen when you dry fire with no dummy rounds or magazine inserted?
 
Sometimes the firing pin snags on the primer of the fired round, so you can feel it when you try to extract and eject it. I'd have a look at your 'dummy rds', with particular care paid to the 'primer' area of them.

Does it do this with live ammunition too? I would absolutely go to the range and try it.
 
Well, my son came over last night, took out the trigger mechanism housing and ejector, the conector, trigger, trigger bar.
put everything back, and said we'll try it this weekend. I tried it with dummy rounds, and it worked as it should. I'll let you know.
thanks for all the support.......
Dave.
 
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