AR-15 Ejection Port Dust Cover Replacement Help?


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Old 08-23-13, 06:32 AM
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AR-15 Ejection Port Dust Cover Replacement Help?

Good morning,

I just replaced the ejection port dust cover on a Smith & Wesson M&P 15 and had no issues whatsoever until the very end of the process...

I CANNOT seem to get that little "c" shaped clamp/ring back on the rod to secure the assembly.



I know alot of people make this modification to their AR.

Does anyone have any helpful tips or tricks to make this tiny little job easier?

Thanks in advance. y'all.
 
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Old 08-26-13, 12:14 PM
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I pushed the mounting rod further through the port cover/spring assembly and located the groove indicating where the retention clamp should be positioned. Correct clamp positioning plus one drop of CLP on the rod groove corrected the issue in seconds.
 
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Old 08-26-13, 02:20 PM
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I'm no AR expert (only shot an M-16A1 a few times), but that sounds right. Btw....I'm pretty sure that c shaped thing is called a C-clip (for obvious reasons). They always fit into a little grove machined on a shaft or pin.

Also called Je--- Ch---! clip, because thats what people say when they pry it off and it flies into space somewhere.
 
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Old 08-27-13, 06:42 AM
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Hahaha. Thanks Gunguy. Yes, I uttered a few colorful words during this modification before I found the c-clip groove on the rod. Based on online research, I've learned that little part has dozens of names, so who knows which is correct. Funny you should mention the unpredictability of removing it initially... when it flew off, it went right in my mouth. Luckily, it didn't end up down my throat.
 
 

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