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Posted: 6/5/2005 7:55:16 AM EDT
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I put my ar-15 with an M16SP1 upper and butstock on a STAG lower. Go to shoot it and when I get up on the sights and fire I can hear the buffer spring quite clearly, even through my hearing protectors (I wear the earmuff type). The muffs are resting on the stock, so that is probibly aiding in hearing the spring. Is it normal to hear the spring sliding back and forth or do I have a problem? |
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Should it make noise? IMO No. But they all do, and it is not a problem. I tried the grease/vasoline and it did make it quieter. And messier. I cleaned it out and the residual in the tube seems to keep the noise down a lot. So my discovery is that it does not take much. Maybe even a light lube would reduce the noise. |
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My SP1 was the noisiest of them all. Eventually replaced the action spring because it was getting some miles on it and the noise completely went away. May have something to do with the spring versus tube diameters. I just apply a little CLP to the spring and tube on all of them and don't notice too much noise. |
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The sprong noise comes from the spring riding down the receiver extension (surface friction). Some noise is normal, but on some spring with the end of coil burs, there can be an added scraping noise. To tame this extra noise, pull the buffer spring and cleaned/de-bur the end of wire cuts (so they don't catch the buffer/extension tube). At the same time, use a file and remove the protruding metal of the buffer end cap roll pin (flush both sides of the pin with the outer surface of the buffer). When reinstalling the buffer, remember to add a light coat of CLP to the buffer/recoil spring, buffer, and the inner surfaces of the receiver extension. |
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