Does everyone's AR-15 go "SPROINGGG"?

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1KPerDay

1KPerDay

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I took my wife and son shooting last weekend and noticed, again, that my Colt SP-1 makes a distinct sproinging sound. I assume this is from the action spring reverberating inside the buttstock. With every shot you can hear (and feel) a "sproingssgggggggggggggg" for about half a second. The rifle is 100% stock AFAIK. I've never shot another AR but I did shoot an M4 (full auto) and I don't remember it doing that. But I may have been deafened by adrenaline.

Maybe it's the "old style" action spring? I assume they've probably been upgraded or improved over the years... or do all ARs go sproing? Everyone who shoots my rifle comments on it.
 
Slather some heavy grease on the spring and put it back in and the noise will be severely cut down.
The only down side to this is it can get a bit messy
 
I use Lubri-plate grease. The contents of one grease pot (for my M1) coats the spring nicely.

I think that many people underlube their AR's in general. They really do run better "wet."
 
This thread title made me smile!

Best way I've ever heard the AR-15 quirk described! For what it's worth, every AR I've ever shot makes that sound. My personal one does it, my work one does it, and my friend's AR's do it :)
 
Not only is it how it sounds, we are used to it in the army. We NEVER grease the inside of the buffer tube or spring, because the armorer wants it back clean and dry. Can you imagine trying to wipe that thing clean of grease? But as far as private weapons go, I can't see how it would be anything but good to keep it greased.
 
that sound drives me nuts. But just remember you hear it because your cheek is resting right next to the buffer spring and the ear muffs don't prevent sound from being conducted from your cheek into your head.

Sounds kind of funny, but nobody that has not shot an EBR will know unless you tell.:D
 
If you wear a good set of earmuffs and get a good cheek weld, you hear the SPROING through the stock and your face, but you don't hear much of the report from the muzzle -- especially with a 20" or longer barrel.
 
That's the spring in the buffer tube being compressed and released when the bolt operates. Perfectly natural.
 
I have to admit......I'm not sure if the "SPROING" is distinctive in my 16". Is this a problem, or am I just not hearing the "SPROING" as the "SPROING," am I just thinking it's something else, am I hearing it wrong?
 
The Sproinggg bugged me too. I asked here just as you have and was told by many to live with it or learn to enjoy it like some do.
"Nope, just enjoy the music. The "sproiing" is the sound of a happy AR." ;) (my wink)
Click to expand...
Besides the grease suggestion, some suggested I get an adjustable stock. I put a Magpul MOE stock on one gun and a M4Socom stock on another. No Sproinggg worth mentioning any more.

Seems it really amplifies itself in the stadard fixed stock.
 
Mine goes "sproing" like an aluminum storm door, less so if I grease the spring up with some Militec grease.

Now, the real question is this: does an AR in 9mm go *POP* *POP* like a Glock?
 
Mine used to...

Until I put a dab of Lubriplate on the buffer spring. Not a lot, just a smidgen, and problem gone. ;)
 
No, mine doesn't have that many g's in it, and no i at all. Now, the stopper gun I got for Christmas one year did that.
 
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