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Two Hundred plus AR15 builds and guess what? I still lose stuff! Gone With The Wind! Amazing hang times! Lost forever in the deep shag carpet which should never have been laid in the Man Cave! Yikes Indeed!

Can totally relate. Detents and carpets don't mix. My worst was replacing the rear sight adjustment screw to an older SW 686. The detent in those are tiny. When I failed to keep it from flying out and it hit the carpet I knew it was a lost cause looking. Lol.
 
And a simple fix to this is as follows:

Tap it with a 4-40 plug tap, trim .125 off the spring, purchase a 4-40 set screw from any hardware store, install set screw.
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I think your beef with springs is not so much with the spring itself, but with Hooke's Law & the Spring Constant.

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Hooke's law states that the force needed to compress or extend a spring is directly proportional to the distance you stretch it. As an equation, Hooke's law can be represented as F = kx, where F is the force we apply, k is the spring constant, and x is the extension of the material (typically in meters)
 
I think your beef with springs is not so much with the spring itself, but with Hooke's Law & the Spring Constant.

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Hooke's law states that the force needed to compress or extend a spring is directly proportional to the distance you stretch it. As an equation, Hooke's law can be represented as F = kx, where F is the force we apply, k is the spring constant, and x is the extension of the material (typically in meters)

I see what you did there.....
F=-K. I see it & raise you a few BP points & add much frustration!!!!!:p
 
@bsa1917hunter thanks! What's funny is I took these photos awhile back with my brother and posted them on fb. Oh they have made their rounds all over the interweb now. Every ar build website uses them I bet.
I should have watermarked them.
 
And a simple fix to this is as follows:

Tap it with a 4-40 plug tap, trim .125 off the spring, purchase a 4-40 set screw from any hardware store, install set screw.
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Should make an endplate that caters to easy access to a screw. Something like an Allen head or something common. new product on your hands.
 

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