My nephew called a while ago and said another nephew had just purchased his first AR15, a Diamondback .223 New in the box.
He said they were having problems.
I asked what was going on and he said that it would not even fire the first round.
Try, and try again, he said the firing pin was not even putting a dent in the primer.
I asked the nephew on the phone if he had his AR there and he said yes, so I suggested that they swap bolt carrier groups and see if it would fire.
Success! It fired each and every time tried.
I told him to take it back to the gunshop, and they did.
The smith at the shop told them that "the spring in the firing pin channel was getting in the way".
Nephew said they had it running in less than 2 minutes.
I have never heard of a firing pin spring in an AR15.
I thought they were all free-floating firing pins.
Is there a "new" design I was not aware of?
Would this be an attempt to mitigate the chances of a slam-fire?
I'm glad I could help him figure out the issue on the phone, but I'm still a little confused.
Not like that's something new...
He said they were having problems.
I asked what was going on and he said that it would not even fire the first round.
Try, and try again, he said the firing pin was not even putting a dent in the primer.
I asked the nephew on the phone if he had his AR there and he said yes, so I suggested that they swap bolt carrier groups and see if it would fire.
Success! It fired each and every time tried.
I told him to take it back to the gunshop, and they did.
The smith at the shop told them that "the spring in the firing pin channel was getting in the way".
Nephew said they had it running in less than 2 minutes.
I have never heard of a firing pin spring in an AR15.
I thought they were all free-floating firing pins.
Is there a "new" design I was not aware of?
Would this be an attempt to mitigate the chances of a slam-fire?
I'm glad I could help him figure out the issue on the phone, but I'm still a little confused.
Not like that's something new...