Fail to fire suspect

[Dustbuster]

I'm not qualified like some of the folks here are in gun mechanics, but ! I found this culprit guilty of giving me a hard time by not making some primers pop! I checked all the usual suspects and this had to be it . The rifle it came out of works fine, gas is set fine,
Ammo is fine, here's what it came down to:

Kinda short right ???

They look the same but:


Top one is bad bottom works well.... Kinda interesting...problem solved.Did a lot of reading on this, When I hear hoof beats I think horses, not zebras..

Also the upper it came out of is fairly new,I believe this firing pin literally was just a micron out of size causing it to ftf every 4 or 5 rounds....changed the pin for a spikes firing pin, problem resolved...Just wanted to share that....and by the way its out of a piston upper (not a sig) so buffer issues were non existent,hammer spring was fine as well....


Sent from my iPhone using Tapatalk 2 of course it ate my spelling.

Edited January 7, 2014 by Dustbuster

[gregintenn]

Way to go! It feels good to solve a nagging problem. :up:

[RED333]

Look like the top pin is not ground back on the shoulder as the bottom one is.

Also look like the top pin has a bit of a mushroom on the tip.

[Dustbuster]

Yes and yes,cept the mushroom is optical not physical. I had to look real hard at is as well...additional note the widest part of the pin is a tad too thick as well keeping the tip from extending longer as it should


Sent from my iPhone using Tapatalk 2 of course it ate my spelling. Edited January 7, 2014 by Dustbuster

[Caster]

AR firing pins are cheap and plentiful. Anyone's a fool not to keep a fair number of spares. I keep half a dozen on hand....just in case.

[Oh Shoot]

AR firing pins are cheap and plentiful. Anyone's a fool not to keep a fair number of spares. I keep half a dozen on hand....just in case.

 

Or make your own in a pinch:

 

http://www.youtube.com/watch?v=vNGnq9A-cFE

 

- OS

[KKing]

Edit: nevermind Edited January 7, 2014 by KKing

[Dustbuster]

pretty cool, mfgr sent me a new pin, same style as the old one, they informed me theyre the same ones brownells sells......anyhow i ordered 2 from rock river, should be gtg as soon as i have em,!!!