Psa branded bolt problems ?

[Dt219]

I have used my maxim bolt in 2 carriers and 2 different barrels flawlessly. One is a lilja with a couple hundred rounds on it and the other is a criterion with 25. I recently picked up a psa nitride bcg. Installed in both guns it fails to extract most times or fails to eject. I bought a Alexander arms extractor and got it swapped out still same results. Is there some dimensions I can measure ? Working it by hand the maxim bolt with a loaded round is pretty easy to get out of the chamber, the psa I have to beat and beat it on something solid to get it out. Thanks

[Dt219]

Took oring out from under Alexander arms extractor drop the hammer with a round in chamber, fully seated and pull back the charging handle and the case stays in the chamber

[sundowner]

I have a PSA 20" upper with their BCG and have no problems with it and I used their BC with a Monster MK136 bolt in my new 16" build and have zero problems with it .

[montana]

Did you check head space with your new bolt??

[Old Bob]

Have you tried your Maxim bolt in your PSA carrier? PSA bolt in your Maxim carrier? Have you measured the depth of your PSA bolt face (should be .136")?

[lazyengineer]

Broke am extractor. They said sorry, we are out, so will am entire replacement Bolt carrier group be OK? Uh... sure! Also, heed thebadvise about the O ring. Take it out. Runs great.

[Dt219]

I think I found it. The cross pin for the extractor is drilled about .010 further back than my other bolts. Won’t let the extractor latch over the rim.

[Dt219]

Yes I have swapped out as many pieces as I can

[Klem]

I think I found it. The cross pin for the extractor is drilled about .010 further back than my other bolts. Won’t let the extractor latch over the rim.

Dt,

That is interesting.

There was another thread recently on where the extractor sits relative to the bolt face.
https://www.65grendel.com/forum/showthre...post290108

Here is the sentence in the first post, Also, the lower bolt face edge of the extractor is slightly higher than the bolt face, shouldn't it be flush?

The OP is concerned the extractor groove is not level with the bolt face and the way I understand his FTE is the case rim pushes the extractor out and the claw at the end does not engage with the rim. Anyway, it would be because the hole for the extractor is not drilled in exactly the right place for the shape of the extractor.