Need Input on Strange Noise

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[ARCHIVED THREAD] - Need Input on Strange Noise

Posted: 9/11/2005 12:00:41 AM EDT

Took my "new" AR to the range for the first time today.

For some reason, every shot I could hear a prominent and strange "Doing!" noise...that sounded like the spring in the buttstock assembly was making a vibrating noise every time the rifle discharged.

Is this normal??? It was pretty annoying. Please share your thoughts. Thanks a lot.

Posted: 9/11/2005 12:12:33 AM EDT

[#1]

FNC

seriously...it's normal.

Posted: 9/11/2005 12:31:30 AM EDT

[#2]

Helps to make sure that the buffer, buffer spring, and inside of the receiver extension are lightly lubed with CLP, and the receiver side of the buffer spring coil is not stick up past the buffer and scrapping down the inside of the tube (read all of this will lighten the sprong noise, but it will never total go away).

Posted: 9/11/2005 1:04:35 AM EDT

[#3]

Wear some earplugs than ear-muff... you won't hear a thing ~NewbieDave

Posted: 9/11/2005 7:32:05 AM EDT

[#4]

very normal.

They also make a distinct sound when you fire the last shot and the bolt locks back.

I have gotten used to it and actually like the ability to "hear" when my last round is shot.

you'll get used to it.

Posted: 9/11/2005 10:16:14 AM EDT

[#5]

LOL - OK guy's. Thanks.

With how fun the rifle was overall, I'm sure I'll get used to it!

Posted: 9/11/2005 6:04:24 PM EDT

[#6]

Haha first time I shot my buddies AR15 I thought I broke it. I unloaded it and went over to his booth with my tail between my legs and told him that I heard a loud springy noise. He pretended for a second that I broke it then told me the truth.

I look forward to doing the same to my friends in the near future.

Posted: 9/12/2005 9:29:18 AM EDT

[#7]

I put in an extra power action spring (buffer spring) from Wolff Springs and the "sproing" was no more. Recoil much nicer too.

Shok

Posted: 9/12/2005 7:02:38 PM EDT

[#8]

A bit of grease from my M1A's kit on the sping and the noise was gone. Be aware that it does require cleaning from time to time too as the oil/grease will attract dirt and dust.

Posted: 9/13/2005 9:51:03 AM EDT

[#9]

Quoted:
a prominent and strange "Doing!" noise

Most commonly called "sproing" on this forum.

[ARCHIVED THREAD] - Need Input on Strange Noise

AR-15 » Troubleshooting

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