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3/20/2017 5:03:23 PM
Posted: 3/31/2009 6:59:42 PM EDT
Are the M16 and AR15 firing pins essentially interchangeable or is there issues using the M16 pin on the AR15 carrier?

Have a few of both and am just curious regarding spares.
Link Posted: 3/31/2009 7:07:34 PM EDT
They are the same. No problem.
Link Posted: 3/31/2009 7:10:23 PM EDT
[Last Edit: 3/31/2009 7:19:55 PM EDT by USMC88-93]

Originally Posted By Arms_Reach:
They are the same. .................
No they are not but I can not see how using either one in either application would be an issue.
Link Posted: 3/31/2009 7:15:19 PM EDT
Originally Posted By Arms_Reach:
They are the same. No problem.


They are not the same and there is a problem when using an M16 firing pin in a non-shrouded AR-15 bolt carrier.
Link Posted: 3/31/2009 7:19:05 PM EDT
[Last Edit: 3/31/2009 7:20:46 PM EDT by George_in_Wis]
Don't use an M16 firing pin with the combination of an unshrouded semi carrier and notched hammer. Otherwise you should be okay.


ETA: I was typing when Molon beat me to it.
Link Posted: 3/31/2009 7:19:12 PM EDT
Ok so thats the key if My AR15 carrier has the firing pin shrouded than there is no issue.

Thanks. I knew it had to be something obvious.
Link Posted: 3/31/2009 7:40:41 PM EDT
[Last Edit: 3/31/2009 7:42:19 PM EDT by Arms_Reach]
You guys are correct, I was misinformed. In an effort to show I don't spout nonsense here is a reference.
US Patent 5421119 - M16/Ar15 Riffle
-also-
Bravo Company (carries less weight, I know)


Upon further review I found an exerpt from "The Competitive AR 15" LINK saying that my prior post is wrong.
The further I read and the more sources I reference the more contradictory evidence I stack up.

I apologize for being wrong. Thank you for correcting me, limiting misinformation.
Link Posted: 3/31/2009 8:01:25 PM EDT
Originally Posted By Arms_Reach:
You guys are correct, I was misinformed. In an effort to show I don't spout nonsense here is a reference.
US Patent 5421119 - M16/Ar15 Riffle
-also-
Bravo Company (carries less weight, I know)


Upon further review I found an exerpt from "The Competitive AR 15" LINK saying that my prior post is wrong.
The further I read and the more sources I reference the more contradictory evidence I stack up.

I apologize for being wrong. Thank you for correcting me, limiting misinformation.


Let's Hang Him .........
Link Posted: 3/31/2009 8:07:49 PM EDT
Is someone going to add a "Large Collar Firing Pin" to the mil-spec / not mil-spec table now?

Hang him? I can tell from the mild response the mods have been busy enforcing again.
Link Posted: 3/31/2009 8:09:29 PM EDT
[Last Edit: 3/31/2009 8:23:36 PM EDT by Molon]
Originally Posted By Muttt:
Originally Posted By Arms_Reach:
You guys are correct, I was misinformed. In an effort to show I don't spout nonsense here is a reference.
US Patent 5421119 - M16/Ar15 Riffle
-also-
Bravo Company (carries less weight, I know)


Upon further review I found an exerpt from "The Competitive AR 15" LINK saying that my prior post is wrong.
The further I read and the more sources I reference the more contradictory evidence I stack up.

I apologize for being wrong. Thank you for correcting me, limiting misinformation.


Let's Hang Him .........


I realize you're being humerus, but actually, I give him kudos. I was going to make a very sarcastic response in my first post about have a clue what you're talking about when posting in a technical forum. Since he was man enough to admit making a mistake, I think he just earned some respect here.
Link Posted: 3/31/2009 9:21:16 PM EDT
While the military only uses M16 pins many aftermarket M16 BCGs use the AR15 pin. BCM and Young for example. Some other like CMT/Stag and Rock River use the M16 pin in there semi auto BCGs. I use M16 pins since I do not own any unshrouded carriers any more.
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