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9/3/2025 7:49:29 PM EDT
I have a dust cover that won't snap shut. The spring-loaded dingus moves up and down under finger pressure but won't move when pressed against the upper to snap it closed. Put a small mark in the metal of the upper receiver. I mean, it's not mission critical...since I don't HAVE any missions, but it would be kind of nice to be able to close it.
9/3/2025 8:23:38 PM EDT
[#1]
I’ve run into that several times.  Tried another DC and all was well.  If you build enough of these ridiculously addicting big boy Lego sets you’re sure to run into a mucked up DC now and again.
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9/4/2025 12:42:10 AM EDT
[#2]
Ok, I'll get one, this Lego kit came pre-assembled. Thank you!
10/12/2025 11:03:14 AM EDT
[#3]
Originally Posted By armoredman:
I have a dust cover that won't snap shut. The spring-loaded dingus moves up and down under finger pressure but won't move when pressed against the upper to snap it closed. Put a small mark in the metal of the upper receiver. I mean, it's not mission critical...since I don't HAVE any missions, but it would be kind of nice to be able to close it.
View Quote


as I build new or disassemble/reassemble, all mine are getting the MagPul port covers.
The deuce you say.
10/12/2025 11:37:02 AM EDT
[#4]
Yeah the Magpul covers make life a lot easier, just for install sake it’s worth it.

I’ve had a handful of fickle dust covers, usually trying a different one works.

I have found that if the rod gets slightly bent that’s a contributing factor
10/12/2025 5:08:46 PM EDT
[#5]
Quote History
Originally Posted By racer765:


as I build new or disassemble/reassemble, all mine are getting the MagPul port covers.
View Quote


I tried 2 different Magpul port covers on 2 different Colts, never got a tight seal, went back to mil spec and tight like it should be.. Any idea why that would be?
10/12/2025 5:35:07 PM EDT
[#6]
I have a Spikes Tactical upper with a crooked dust cover that doesn't seal the rear-end.  That's caused me far too much annoyance over the years, but..... I don't feel like de-barreling the upper to replace it.  This will require a new upper to remedy.  The holes for the dust cover pin were drilled crooked.

Another upper, unbranded, that pops open if you apply even the slightest pressure to the middle of the axis pin.  Super annoying.  In this case, it probably just needs a quality pin/rod.  

And then, he arrives at the last item on his bucket list...
10/12/2025 5:59:55 PM EDT
[#7]
Maybe the spring is on backwards?  If its on the right way, you can take it off, and wind the spring a bit more.  Don't waste your money on those fancy dust covers.
10/13/2025 12:34:20 PM EDT
[#8]
I managed to get it shut with a tool...just to see if I could, and man did it take some pulling on the charging handle to get it open again!
This weekend I am going to strip it out, if this fat old fumble fingered idiot can figure out hwo to do it...see, I can't even spell "how"...

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