Firing pin questions

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Drcoffee
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I stripped the bolt carrier down to clean and lube it. I noticed there was no firing pin spring. Is that correct? I see the firing pin cannot hit the primer until the bolt is fully rotated and closed.

Also, is the firing pin unique to T91 or is it a standard AR15 firing pin?
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e292644
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Correct, there's no firing pin spring for T91 rifle and it's the standard AR-15 firing pin.
Drcoffee
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Great! Thank you.

Is there any benefit to a titanium firing pin or is it just gimmicky?
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e292644
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Shouldn't be any different, Mil-Spec will work fine for many years.
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