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Re: Replacement barrel help
Posted: Mon Nov 02, 2020 5:58 pm
by Mattnall
38Super wrote:
It's the bolt carrier that is cracked in my GSG 5. I've noticed that the entire bolt carrier has around 10-15 thou of movement when it's in the gun and I'm wondering if it's this that causes the fractures. I've adapted the fixing system to take out the movement and lock the bolt carrier in tight. I'll see if the cracks get worse or not next time I shoot it.
I haven't seen the GSG5 bolt but it might be similar to the others and the crack starts where the bolt halves are screwed together and propagates to the firing pin slot. This allows the two halves to move relative to each other and the locating lugs break off.
Re: Replacement barrel help
Posted: Mon Nov 02, 2020 8:10 pm
by 38Super
Mattnall wrote:I haven't seen the GSG5 bolt but it might be similar to the others and the crack starts where the bolt halves are screwed together and propagates to the firing pin slot. This allows the two halves to move relative to each other and the locating lugs break off.
Here's the GSG bolt carrier group showing where mine is cracked. I can't find a pic of the StG's to compare.
Re: Replacement barrel help
Posted: Mon Nov 02, 2020 9:25 pm
by GeeRam
38Super wrote:Mattnall wrote:I haven't seen the GSG5 bolt but it might be similar to the others and the crack starts where the bolt halves are screwed together and propagates to the firing pin slot. This allows the two halves to move relative to each other and the locating lugs break off.
Here's the GSG bolt carrier group showing where mine is cracked. I can't find a pic of the StG's to compare.
The attachment InkedGSG Bolt Group_LI.jpg is no longer available
No similarities with the StG.44 at all there it would seem?
Re: Replacement barrel help
Posted: Mon Nov 02, 2020 10:06 pm
by 38Super
Hard to tell from the diagram.
Does the StG bolt look like this?