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 GSG-5 Light Primer Strike Problem (Update 3/3/08) Now with firing pin replacement pics
T-blaster  [Member]
2/23/2008 6:31:57 PM
Received my GSG Tuesday and finally was able to test it today. Things did not go well as my longest string of fire was approx 10 rounds before a failure. Every other round was pull the trigger and.......nothing. Upon reloading the round into the gun, some instances they went off but most did not. At this point I tried 3 different mags, and 3 different types of ammo (Federal bulk pack from Wal-Mart - 2 different boxes, Winchester Super X, and Remington Thunderbolt - yes I was desperate). The Federal bulk worked the best. I was conscious of keeping my hand off the mag and on the forearm.

I disassembled the gun and gave it a good cleaning focusing on the bolt face and firing pin. This did not help. I disassembled again and this time took apart the bolt. I found the firing pin itself, by design, does not have much travel. I'm not sure if this is true of all rimfire pins.
I also took some measurements of the spring:
21 coils
.152" OD
.095" ID
.0285" wire thickness
Approx .88" long, not compressed

At this point I will try to source a spring that will give me more force on the firing pin strike. If anyone has any ideas, they would be welcome. I have a 2nd GSG in the box for my brother and I'm tempted to see if this one will have the same issues. Based on everyones reviews, I thought this was going to be a trouble free blaster. Accuracy was good at 25 yards and the cool factor is high with this one. I just want it to work.

Attached picture shows typical primer strike. This one was a no-fire.
Thanks for looking.
Tim


jackal2001  [Team Member]
2/23/2008 6:58:16 PM
Looks just like my other pics. A fix is unknown at this time.
mjrowley  [Team Member]
2/23/2008 8:22:15 PM

Originally Posted By T-blaster:
Received my GSG Tuesday and finally was able to test it today. Things did not go well as my longest string of fire was approx 10 rounds before a failure. Every other round was pull the trigger and.......nothing. Upon reloading the round into the gun, some instances they went off but most did not. At this point I tried 3 different mags, and 3 different types of ammo (Federal bulk pack from Wal-Mart - 2 different boxes, Winchester Super X, and Remington Thunderbolt - yes I was desperate). The Federal bulk worked the best. I was conscious of keeping my hand off the mag and on the forearm.

I disassembled the gun and gave it a good cleaning focusing on the bolt face and firing pin. This did not help. I disassembled again and this time took apart the bolt. I found the firing pin itself, by design, does not have much travel. I'm not sure if this is true of all rimfire pins.
I also took some measurements of the spring:
21 coils
.152" OD
.095" ID
.0285" wire thickness
Approx .88" long, not compressed

At this point I will try to source a spring that will give me more force on the firing pin strike. If anyone has any ideas, they would be welcome. I have a 2nd GSG in the box for my brother and I'm tempted to see if this one will have the same issues. Based on everyones reviews, I thought this was going to be a trouble free blaster. Accuracy was good at 25 yards and the cool factor is high with this one. I just want it to work.

Attached picture shows typical primer strike. This one was a no-fire.
Thanks for looking.
Tim

img.photobucket.com/albums/v312/teber71/GSG-5lightprimer.jpg


Thankyou for doing this!

I have the same problem
jackal2001  [Team Member]
2/23/2008 8:34:14 PM
I have an idea, although I wouldn't try it myself. Why not just peen the firing pin to make it thinner. Hell my P22 firing pin is very thin but hits hard.
If you took the firing pin out and either heated it and put it on an anvil and just hit it to make it thinner and longer, would that work? Only do the side where it contacts the casing.
I did the mod to the P22 extractor where peening it to bend it and make it longer worked.
Just a suggestion.

Before going through all that, I would see if your firing pin makes any kind of mark on the outer edge of the barrel, where it would impact. I mean is the pin not long enough or is it not hitting hard enough?
T-blaster  [Member]
2/25/2008 10:36:24 AM
*Update* I decided to contact GSG before modifying anything. Within the hour I had a response asking for a picture I offered to send of the primer strike. I was then asked to send my address as they will be sending me a new firing pin and springs. I'm impressed by the quick response. I'll take pictures and document the process once I get the parts. As a further note, my brother's gun ran several mags at rapid fire with no issues.
jackal2001  [Team Member]
2/25/2008 12:53:49 PM

Originally Posted By T-blaster:
*Update* I decided to contact GSG before modifying anything. Within the hour I had a response asking for a picture I offered to send of the primer strike. I was then asked to send my address as they will be sending me a new firing pin and springs. I'm impressed by the quick response. I'll take pictures and document the process once I get the parts. As a further note, my brother's gun ran several mags at rapid fire with no issues.


interesting. it would be best to measure lenth of the new pin compared to the old. a picture documentation of replacing the firing pin would be great as well.
T-blaster  [Member]
2/25/2008 12:58:31 PM

Originally Posted By jackal2001:
interesting. it would be best to measure lenth of the new pin compared to the old. a picture documentation of replacing the firing pin would be great as well.


Will do. Also, thanks jackal for your work putting the GSG info together.

Tim
jackal2001  [Team Member]
2/25/2008 1:14:05 PM

Originally Posted By T-blaster:

Originally Posted By jackal2001:
interesting. it would be best to measure lenth of the new pin compared to the old. a picture documentation of replacing the firing pin would be great as well.


Will do. Also, thanks jackal for your work putting the GSG info together.

Tim


No problem, but I am relying on you guys to get me all this info. I can't do it myself. I'm just putting it together. Believe me, I hate going to 10 different forums and trying to find answers.
Heineken  [Member]
2/25/2008 3:00:39 PM

Originally Posted By jackal2001:

Originally Posted By T-blaster:

Originally Posted By jackal2001:
interesting. it would be best to measure lenth of the new pin compared to the old. a picture documentation of replacing the firing pin would be great as well.


Will do. Also, thanks jackal for your work putting the GSG info together.

Tim


No problem, but I am relying on you guys to get me all this info. I can't do it myself. I'm just putting it together. Believe me, I hate going to 10 different forums and trying to find answers.


i shot another 300 threw mine today, with NO lite primer strikes...

so with a totoal of 900 shots i have had 4 light strikes...i think im good to go...mabey a few guns out htere just had a little to week of springs...

and GSG customer service rocks, they respond to emails VERY FAST, and seem to realy want to take good care of us, im very happy with everything so far...
pyro6988  [Team Member]
2/25/2008 4:05:58 PM
Glad they took care of you.
jackal2001  [Team Member]
2/25/2008 5:08:52 PM
another pic of my brass from today using federal value pack. looks almost exactly the same as yours.
mjrowley  [Team Member]
2/25/2008 11:40:02 PM



Originally Posted By jackal2001:
another pic of my brass from today using federal value pack. looks almost exactly the same as yours.
i184.photobucket.com/albums/x124/jackal2001/gsg5/gsgbrass.jpg


Do you mind if I send them that pic?

Or casn you take a differnt one for me?

My MICRO pic taking skills suck.

Ill will be sending an email off tonight.

AWESOME THREAD!!!
mjrowley  [Team Member]
2/25/2008 11:49:25 PM

Originally Posted By T-blaster:
*Update* I decided to contact GSG before modifying anything. Within the hour I had a response asking for a picture I offered to send of the primer strike. I was then asked to send my address as they will be sending me a new firing pin and springs. I'm impressed by the quick response. I'll take pictures and document the process once I get the parts. As a further note, my brother's gun ran several mags at rapid fire with no issues.


was this the email you used?

info@germansportguns.de
jackal2001  [Team Member]
2/26/2008 7:02:58 AM
Why are you sending them a picture from my gun when 1- you don't have a problem with yours, 2- those are not your primer strikes.

If I were you and just wanted some general information, I would send an email stating some minor issues were brought up and some people have noticed that the GSG does strike the primer lighter than other weapons. Ask if there is a reason for this? I am guessing that there is a 99% chance that if you ask for another firing pin, it will be exactly the same as you have now.
Most likely the only way you will get a harder hit is if you peen your firing pin to stretch it out a few microns.
T-blaster  [Member]
2/26/2008 7:57:45 AM

Originally Posted By mjrowley:

was this the email you used?

info@germansportguns.de


I initially started on their contact page:
www.germansportguns.de/index.php?id=10400

Then someone from their company contacted me. I think they are about 8 hrs ahead of us so I started first thing in the morning. Don't be discouraged if they are already gone for the day. I hope you get squared away as there's nothing worse than no bang when you pull the trigger.
Thanks...Tim
T-blaster  [Member]
2/26/2008 8:03:34 AM

Originally Posted By jackal2001:
another pic of my brass from today using federal value pack. looks almost exactly the same as yours.


Jackal, they do look the same and that puzzles me. I remember reading somewhere in another post where a guy was going to put a stronger trigger spring in. This makes more sense to me as the hammer would hit harder. This is why I decided to contact GSG and let them determine the fix. I'm keeping my fingers crossed that I have a bad pin or weak spring.

Thanks...Tim
jackal2001  [Team Member]
2/26/2008 8:42:48 AM

Originally Posted By T-blaster:

Originally Posted By jackal2001:
another pic of my brass from today using federal value pack. looks almost exactly the same as yours.


Jackal, they do look the same and that puzzles me. I remember reading somewhere in another post where a guy was going to put a stronger trigger spring in. This makes more sense to me as the hammer would hit harder. This is why I decided to contact GSG and let them determine the fix. I'm keeping my fingers crossed that I have a bad pin or weak spring.

Thanks...Tim


A stonger hammer spring may lead to the gun not cycling. Worth a try though I guess. Personally if I was having the problem, I would just peen the firing pin so it would be a few microns longer and definately thinner. My P22 firing pin is about 1/4 of the thickness of the GSG but hits a lot harder. I don't know how this firing pin works, if it is a travel distance problem, or force hitting problem, or length of the pin problem.
mjrowley  [Team Member]
2/26/2008 12:45:04 PM

Originally Posted By jackal2001:
Why are you sending them a picture from my gun when 1- you don't have a problem with yours, 2- those are not your primer strikes.

If I were you and just wanted some general information, I would send an email stating some minor issues were brought up and some people have noticed that the GSG does strike the primer lighter than other weapons. Ask if there is a reason for this? I am guessing that there is a 99% chance that if you ask for another firing pin, it will be exactly the same as you have now.
Most likely the only way you will get a harder hit is if you peen your firing pin to stretch it out a few microns.


I have not sent them anything from "YOUR GUN", I was just asking if I could use your pic of primer strikes. Geez...

Besides I have been plagued by lite primer strikes since I had my gun.
T-blaster  [Member]
3/3/2008 12:04:52 PM
OK... good news, it works. I contacted GSG on 2/25 and by 3/1 (5 days) I had a replacement firing pin and spring in the mailbox from Germany. Thanks to GSG for a quick response. Upon comparing firing pins there was no discernable difference. The new one's OAL was less than 1/1000 longer than the old one. Maybe that was enough to discharge the bullet but I don't know. If I had the time, I would have only replaced the pin and not the spring to see if that made a difference. However, I didn't feel like tearing it apart multiple times. I know I am one of the few to experience problems, but I did try to document firing pin replacment. Hope this helps somebody if they need it. Discalimer: I'm not an armorer, what worked for me may not work for you. Wear safety glasses.

Disassemble gun per manufacturer's manaul. We will be working with the bolt assembly. You will need a smaller phillips drive and a T8 Torx drive. Remove 5 screws.


Remove top cover of bolt. The firing pin spring is captured underneath this cover. It will not be removable at this point but keep you hand over it just in case.


This is looking down from the back side of the bolt. Spring is captured and firing pin is marked in picture.


Remove the set screw in order to get at the pin that holds firing pin. I think it was a 1/16" hex wrench.


Flip the bolt over. I needed to push the pin out and used a modified paperclip. Before pushing pin out, you need to hold the top cover, the rounded button, and rear of the firing pin. Once the pin (holding firing pin) is removed, the firing pin will want to jump out the back. Using a combination of your fingers, thay can all be captured and eased out.


Disassembled bolt. You can see the spring laying in the top cover housing.


Upon reassembling: I used some moly lube on the two points in the picture. I found it best to assemble upside down. Lay the spring in the top cover. Lay the upside down bolt onto the top cover. Press in the rounded button until you see the groove. At this point you can insert the firing pin from the rear side. You will feel the top part of the pin contact the spring and you will need to compress until the hole in the pin lines up with the hole in the bolt housing body. At this point, insert the small retaining pin from the side and push it in all the way with the paperclip. Insert the set-screw. At this point you can now insert the (3) phillips screws to secure the top cover.


You are now ready to capture the main springs. Do one side at a time and slowly put the halves together. Don't forget to capture the nut on the rear of the bolt assembly. If that nut is not in correctly, the two halves will not meet. At this point I upgraded the phillips drives with the metric socket head cap screws. I also used a nut on the other side. The same size that works for the barrel work on the bolt. I left the Torx drives alone.


My firing pin strikes are much more pronounced than before and every time I pulled the trigger it fired. Hope this helps.
Tim







jackal2001  [Team Member]
3/3/2008 12:34:22 PM
Holy crap, good work on the pics, I'll copy that up to the big thread tonight. One question, if the firing pin was almost exactly the same size as the old one, why does it hit harder? Exactly what spring was replaced? Do you have pics of some spent brass with the new pin?
my2cents  [Member]
3/3/2008 12:39:17 PM
Did you happen to take a pic with the old and new pins side by side? I'm wondering if the elongated hole for the retaining pin might be slight deeper on the new one allowing slightly more forward movement of the pin.
jackal2001  [Team Member]
3/3/2008 12:44:36 PM

Originally Posted By my2cents:
Did you happen to take a pic with the old and new pins side by side? I'm wondering if the elongated hole for the retaining pin might be slight deeper on the new one allowing slightly more forward movement of the pin.


yes, that would be a possiblility and now seeing what the pin actually looks like, a simple fix of making the hole a bit longer might solve the issue as well. I didn't know that the firing pin travel distance is restricted by the length of the hole in it.
T-blaster  [Member]
3/3/2008 1:36:05 PM

Originally Posted By jackal2001:
Holy crap, good work on the pics, I'll copy that up to the big thread tonight. One question, if the firing pin was almost exactly the same size as the old one, why does it hit harder? Exactly what spring was replaced? Do you have pics of some spent brass with the new pin?


Thanks, hope they will be helpful for someone. I could not get a good picture, but these are fired cases with the new firing pin. It is hard to see but the indent is much more pronounced than the older pin. If you look at the 6th picture, the spring laying in the top cover of the bolt is what I replaced. The original and replacement springs looked identical, coils length, etc...

T-blaster  [Member]
3/3/2008 1:41:43 PM

Originally Posted By my2cents:
Did you happen to take a pic with the old and new pins side by side? I'm wondering if the elongated hole for the retaining pin might be slight deeper on the new one allowing slightly more forward movement of the pin.


Initially, I was expecting the travel of the pin to be the problem: however, when lined up and stacked on top of each other, the holes matched exactly so there was no difference. Color of the replacement was actually closer than the picture shows. Both looked to be heat treated. I could see no visiual difference. In fact while going through this I was not too sure it was going to be fixed. I'm left thinking maybe it was the spring just because I could not compare the springs like I could the firing pin.
jackal2001  [Team Member]
3/3/2008 1:45:43 PM
Well since you have a spare firing pin, I guess you can try and mod it by reaming out the hole a bit, to do some testing, but I know that would be a pain in the butt.
my2cents  [Member]
3/3/2008 4:00:46 PM
Something I noticed from the pics. It looks like there is a built in "stop" on the nose of the firing pin. The square part at the top is the stop which contacts the breech face and the chisled part below it is what contacts the cartridge rim. If the "stop" is too long it will hit the breech face before enough force has been transferred to the rim.

Here are some pics.

From the comparison it does look like the length of the "stop" is very slightly less on the new pin. That would allow the pin to go further forward before it contacts the breech face.



Here is a pic of the bolt face showing the stop and the part that contacts the rim.



Here is a pic of the breech face that shows a mark from where the "stop" part of the firing pin has hit it.




This could mean that if you shorten the "stop" part of the firing pin face just slightly then it could move further forward and transfer more energy to the cartridge rim.
jackal2001  [Team Member]
3/3/2008 5:29:39 PM
Well it seems like we are going to have to come up with a solution. Just got back from the range, out of 500 rounds I had about 12 failures to go boom. Refed them and only about 1/2 went off.

Then I fed 20 rounds of PMC Zapper and 12 failed to go off, this was after the gun was dirty. Refed them and about 4 failed to go off and couldn't get them to go off. I have never had a round of this ammo fail to go off in my P22.

Then I fired 20 CCI Standard Vel and all went off. Hum.
mjrowley  [Team Member]
3/3/2008 5:53:43 PM
Looks like I need to resend an email to GSG, dirty bastages never replyed...

T-blaster  [Member]
3/3/2008 7:03:42 PM

Originally Posted By my2cents:
This could mean that if you shorten the "stop" part of the firing pin face just slightly then it could move further forward and transfer more energy to the cartridge rim.


Very good observation. It would be alot easier to file down the stop rather than elongate the striking area. I'll play with this when I get time.

Thanks...Tim
jackal2001  [Team Member]
3/3/2008 7:57:40 PM
Ya but depending on how precise the measurements are with the pin hole and the stop, they both may be in spec with eachother. If filing down the stop, the hole may also need to be reamed out a bit as well.

Whatever you decide to do, make sure you take good measurements. I already told my brother I would be stealing his micrometer in the future.
LuvBUSHmaster  [Team Member]
3/16/2008 9:50:36 PM
good info in this thread. Thanks!
armalite_OG  [Member]
3/25/2008 9:37:00 PM
I was having the same problem with my gsg. After I read this thread I emailed the company in Germany and they replied and told me they were shipping a new firing pin, spring and some new screws and that should fix the problem. I am glad to see them standing behind their product like that!

I can't wait to fix it and blow thru some more .22 bulk packs!
poppacap  [Member]
3/25/2008 10:10:26 PM

Originally Posted By armalite_OG:
I was having the same problem with my gsg. After I read this thread I emailed the company in Germany and they replied and told me they were shipping a new firing pin, spring and some new screws and that should fix the problem.



I got the same responce from GSG. I am not sold that my ftf's are not ammo related. With CCI Blazer LRN I have about 10% failures after 500 rds. Click no boom. But there is no significant strike on the round. They all fire when refed. There is mention in the manual about using hotter loads. I dont know shit about balistics but I feel that the bolt may not be cycling fully forward. After 100 rounds of Blazer w/ 10 FTF I used federal bulk and it was noticably hotter and had no FTF's out of 100 rounds. Who knows is this is just my rifle but parts are on the way none the less.
RASPUTIN8  [Member]
3/28/2008 5:08:31 PM
Anyone have any long term results after replacing the firing pin? I've got one coming from GSG and was wondering if everyone was generally happy with the replacement? Are light strikes still an issue? I was getting 1 out of 8-9 failure to fires at my last range outing; all of which fired upon refeeding.

Oh and Michael also mentioned that I needed use the replacement screws as they "cut the threads themselves" leading to a "permanent fix". Does that mean ideally these screws shouldn't or can't be be removed regularly?
jackal2001  [Team Member]
3/28/2008 6:00:35 PM

Originally Posted By RASPUTIN8:
Anyone have any long term results after replacing the firing pin? I've got one coming from GSG and was wondering if everyone was generally happy with the replacement? Are light strikes still an issue? I was getting 1 out of 8-9 failure to fires at my last range outing; all of which fired upon refeeding.

Oh and Michael also mentioned that I needed use the replacement screws as they "cut the threads themselves" leading to a "permanent fix". Does that mean ideally these screws shouldn't or can't be be removed regularly?


I got a new firing pin and return spring, but I am hell bent on modding mine. So far with streching the firing pin by peening and doing some other stuff, still nothing more significant on strikes. I just don't think the hammer has enough force behind it to do more damage so to speak to the rim of the case.
It gives me something to do until the weather warms up.

I didn't have that many problems with Fed Value Pack, but PMC Zappers were a major issue. 1/2 failures to go boom out of a single mag.

What is this "cut the threads" you speak of?
poppacap  [Member]
3/28/2008 7:35:37 PM
Here is what they said in a email-

"no problem at all. Today i send you by airmail a new firing pin + spring + new screws. Please use then these new screws for assenbling the firing pin because they are cutting the thread themselves and then they are completely fixed". Best regards, Michael Swoboda

Translation please

The use the new screws part is really all I need to know
jackal2001  [Team Member]
3/28/2008 9:38:26 PM
Ya, I've got no clue what that means too. I didn't get any "screws". Only a new firing pin and the return spring. Let me know what you get when you get it.

Reading that over and over, the only thing I can gather is maybe he mispoke. Maybe he meant to say the firing pin are now being cut themselves and then they are completely fixed.

I did notice a slightly different cut on the side of the pin that strikes the edge of the casing.
poppacap  [Member]
3/29/2008 7:50:48 PM

Originally Posted By jackal2001:
Ya, I've got no clue what that means too. I didn't get any "screws". Only a new firing pin and the return spring. Let me know what you get when you get it.

Reading that over and over, the only thing I can gather is maybe he mispoke. Maybe he meant to say the firing pin are now being cut themselves and then they are completely fixed.

I did notice a slightly different cut on the side of the pin that strikes the edge of the casing.


I got the hardware. That was pretty quick service. 4 days from Germany. You would think Hong Kong is in a different solar system. I would post a pick but I'm a tard with that stuff. Is there an idiots tutorial on picture uploads? Do you need a host? Or I can email a pic for sombody to post. Basically its the firing pin, one spring, three star drive screws, one 3/8" pin w/ head, one 1/4" straight pin and a pointed 1/8" black threaded hex head screw. I have not disasembled it yet so I dont have working knowledge of these parts. Thats the laymans account of what I got. I'm gonna put a few hundred more rounds of ammo through mine before replacing the parts to get a better before and after understanding of its effect with the different ammo I'm using some of witch is more problematic than others.
AR-10man  [Member]
3/30/2008 12:58:24 AM

Originally Posted By poppacap:
I got the hardware. That was pretty quick service. 4 days from Germany. You would think Hong Kong is in a different solar system. I would post a pick but I'm a tard with that stuff. Is there an idiots tutorial on picture uploads? Do you need a host? Or I can email a pic for sombody to post. Basically its the firing pin, one spring, three star drive screws, one 3/8" pin w/ head, one 1/4" straight pin and a pointed 1/8" black threaded hex head screw. I have not disasembled it yet so I dont have working knowledge of these parts. Thats the laymans account of what I got. I'm gonna put a few hundred more rounds of ammo through mine before replacing the parts to get a better before and after understanding of its effect with the different ammo I'm using some of witch is more problematic than others.


Check out the big thread on the first page. They have a pretty good section on taking the firing group apart to replace the firing pin.
armalite_OG  [Member]
3/31/2008 6:44:54 PM
My new firing pin, spring, and screws arrived today from GSG in Germany. Less than a week not bad considering I waited over a week for a scope to arrive from california. Anyway I used the tutorial in the big thread to take apart the bolt and replaced the parts. I will go to the range wednesday afrternoon and report back with the the results.

I couldn't get thru a couple of rounds without having a FTF! Hopefully this will solve the problem I was having.

I really want this gun to be reliable so I can SBR it because I already have an Outback suppressor!
poppacap  [Member]
4/3/2008 11:53:30 AM
I asked Mr. Swoboda for some detail as to this FTF issues and the replacment of the firing pin & mis parts. This was his responce.

"we have improved during the production/assembling of the first lot a little bit the design of the firing pin. So your new firing pin and all other firing pins we have produced after the change have this improvement."

FYI
RASPUTIN8  [Member]
4/3/2008 9:28:12 PM
Got my new pin from GSG and installed it tonight. South strike is with old pin on a normal round (This was not a FTF). East strike is with new pin. It does seem like the overall surface area of contact is somewhat smaller with the new pin. Using P = F/A, less surface area means more pressure applied so more likelihood of a primer going boom right? This could be totally BS. I haven't gone to the range yet with it.



LRRP-87  [Member]
4/14/2008 9:55:45 PM
Installed my new firing pin, spring, and screws; and it runs just like I thought it would when I bought it. FLAWLESS! Now I can get the new stock and short barrel it for a can. I think this little rifle is going to be quite fun.
jackal2001  [Team Member]
4/23/2008 9:54:19 PM
Well I went shooting yesterday, was having some ejection problems. The spent brass was not ejecting sometimes and actually getting smashed in the closing bolt. So I took it apart when I got home to notice that the ejector piece of metal had come loose since it is only pressed in on the side of the breech housing shell.
Any way I took the whole thing apart. Put in my replacement firing pin, used locktite on all the screws, put it back together.
I also found that the barrel clamp screws were loose too. Replaced all those with ss hex screws and nuts and locktited those as well.
I will go back to the range over the weekend and give it another try.
coctailer  [Team Member]
4/23/2008 10:19:23 PM

Originally Posted By jackal2001:
Well I went shooting yesterday, was having some ejection problems. The spent brass was not ejecting sometimes and actually getting smashed in the closing bolt. So I took it apart when I got home to notice that the ejector piece of metal had come loose since it is only pressed in on the side of the breech housing shell.
Any way I took the whole thing apart. Put in my replacement firing pin, used locktite on all the screws, put it back together.
I also found that the barrel clamp screws were loose too. Replaced all those with ss hex screws and nuts and locktited those as well.
I will go back to the range over the weekend and give it another try.


What size/thread are the barrel screws? I should locktite my rifle since it gets used a lot.
jackal2001  [Team Member]
4/24/2008 8:01:33 AM

Originally Posted By coctailer:

Originally Posted By jackal2001:
Well I went shooting yesterday, was having some ejection problems. The spent brass was not ejecting sometimes and actually getting smashed in the closing bolt. So I took it apart when I got home to notice that the ejector piece of metal had come loose since it is only pressed in on the side of the breech housing shell.
Any way I took the whole thing apart. Put in my replacement firing pin, used locktite on all the screws, put it back together.
I also found that the barrel clamp screws were loose too. Replaced all those with ss hex screws and nuts and locktited those as well.
I will go back to the range over the weekend and give it another try.


What size/thread are the barrel screws? I should locktite my rifle since it gets used a lot.


I forget off the top of my head, all the info is in the big thread for replacing screws.
VTDefender  [Member]
5/1/2008 2:02:46 PM

Originally Posted By jackal2001:
Well I went shooting yesterday, was having some ejection problems. The spent brass was not ejecting sometimes and actually getting smashed in the closing bolt. So I took it apart when I got home to notice that the ejector piece of metal had come loose since it is only pressed in on the side of the breech housing shell.
Any way I took the whole thing apart. Put in my replacement firing pin, used locktite on all the screws, put it back together.
I also found that the barrel clamp screws were loose too. Replaced all those with ss hex screws and nuts and locktited those as well.
I will go back to the range over the weekend and give it another try.


Did the replacement pin eliminate the light strikes?

I just barely installed my replacement pin and spring that I received from Amchar today. I won't have a chance to shoot until saturday. Hopefully this takes care of it.

ETA - Thanks a million T-Blaster for the detailed disassembly pics. They helped immensely.
bombstopr  [Member]
5/3/2008 7:16:55 AM
I was having issues with light primer strikes and a loose ejector causing stove pipe jams. I contact Mr Swoobda and they quickly sent a new firing pin and springs. It didn't solve my problem so I emailed them with lengthy details on the issue and Mr Swoobda humbly replied his english is not that good and refered me to Ray Canton who is the US rep and factory trained armorer. I talked to Ray and he directed me to send the gun to him. He said he would narrow the front of the firing pin just a little and lenghten the firing pin hole about 1000th of an inch. The loose ejector is a potential issue with the way it is mounted, but so far has not been a wide spread problem. He happened to have a spare bolt housing in stock that had the ejector firmly mounted to it and replaced mine.
All said and done, I am pleased with GSGs response and Ray Canton's customer service. He is quick to respond and seems to care about taking care of customers. I also learned he is a USMC Vietnam Vet. Just like anything else that is a new design, there are problems that will only show when the product is used in large numbers. Seeing the support GSG gives makes them a winner in my books.
I suggest you be very careful when taking the bolt housing apart to not stress the ejector and cause it to come loose from the mounting.
VTDefender  [Member]
5/3/2008 8:23:54 AM
Maybe I'll try the modifications he suggests with my spare FP. the replacement pin did not solve my problem either.
jackal2001  [Team Member]
5/3/2008 9:21:47 AM
+1
The loose ejector is a potential issue with the way it is mounted


Monday may finally look like a nice day without rain, so I will head up and try my gun with the factory replacement firing pin that GSG sent me.