Modern Sporter - Build Discussions

Yah I feel like some material needs to come off the cover for it to perform a perfect seal on the SS upper. Not sure what to sand down though lol. Frustrating, not a fan of this dust cover at all. Do regular mil spec ones work?

Yes a mil spec cover works. I have the cheaper of the 2 strike industries covers and it works great on my ss upper. And matches the anodizing perfectly
 
https://drive.google.com/file/d/14kJzpFTs2jZtuJop3tj55mGkpQ18DOQP/view?usp=drivesdk

Seals pretty good I'd say. I have about a .002" gap between the cover and the upper. I can push it closed a smidge more than where it catches but i cant fit a piece of paper between it and the upper

That’s exactly how mine fits. And I wouldn’t consider it a problem. The dust cover isn’t meant to seal off the upper it’s meant to block off a huge opening from getting tons of foreign material on the bolt carrier. And I could probably adjust the detent and make the gap even smaller but it won’t open banging it around but the carrier has no problem kicking it open. Mine is also an early first run SS upper with the large port. I haven’t tried it on my FA upper as I haven’t got around to building it yet.
 
This Strike Industries cover fits like a glove. No issues whatsoever. This one is plastic.

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This Cover does not close. I'm holding it down, and you can still see the detent ball through the gap. This cover is aluminum.

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Which one is which? They look the same all around, but one doesn't work.

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Here's the number for the plastic one that seems to work fine for my upper:

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Here's the aluminum one that doesn't work on either my SS or FA uppers.

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It might only take a minor amount of screwing around to make the aluminum cover work, I don't know. I just went with the one that works because I ordered both at the same time.
 
Could be a result of your carrier not having a deep enough cutout. The detention housing appear to be deeper on the aluminum as the plastic one has a flat spot to provide more clearance. What BCG are you running?
 
Could be a result of your carrier not having a deep enough cutout. The detention housing appear to be deeper on the aluminum as the plastic one has a flat spot to provide more clearance. What BCG are you running?

Nah has nothing to do with the carrier. The gap is there even with the carrier removed. Its like because of the detent it wont fully close. But then when i go to lower the screw the dust cover wont lock close. Lmao cant win, I hate the design. I grabbed the enhanced ultimate as others have said it seals perfect.
 
Could be a result of your carrier not having a deep enough cutout. The detention housing appear to be deeper on the aluminum as the plastic one has a flat spot to provide more clearance. What BCG are you running?

Colt BCG, but I took the pic with the bolt locked open, so it's definitely not an interference issue with the bolt.
 
The detent depth on the Strike covers are adjustable with a small flathead screwdriver. Something to try if you haven't already.

Yes brah. Look at my previous posts. Regardless of the depth of the detent the cover does not seal the ejection port at all. Theres literally a cm gap. It sucks.
 
So if anyone can ....say if one wanted to pimp out there ms..... what names ...brands ...would be the best ???...example jp bcg...parts etc..etc..barrels .....is one better than the other ...if so why .....
I got an itch ...to build mine but for the life of me I don’t know what parts I should get forstock ...black label with those Intergraded bipod legs ... just sweet I think ....barrel ???
Anyone please inform me .....thanks
 
So if anyone can ....say if one wanted to pimp out there ms..... what names ...brands ...would be the best ???...example jp bcg...parts etc..etc..barrels .....is one better than the other ...if so why .....
I got an itch ...to build mine but for the life of me I don’t know what parts I should get forstock ...black label with those Intergraded bipod legs ... just sweet I think ....barrel ???
Anyone please inform me .....thanks

If you're considering the BLK LBL handguard, it's a pretty sweet unit. Quality piece, well put together and excellent fit/finish. Just be prepared for a rather "fat" handguard. If you have big mitts, it's not a big deal. It's also not the lightest thing out there.

Anyways, here's a few pics of how it fits up with a MS upper:

(It's not on tight, I just loosely spun it on for pics)

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So if anyone can ....say if one wanted to pimp out there ms..... what names ...brands ...would be the best ???...example jp bcg...parts etc..etc..barrels .....is one better than the other ...if so why .....
I got an itch ...to build mine but for the life of me I don’t know what parts I should get forstock ...black label with those Intergraded bipod legs ... just sweet I think ....barrel ???
Anyone please inform me .....thanks


Geissele makes great stuff! BCM is good, B5 is good.

Here’s my buddy mikes https://imgur.com/a/dOAiu72
 
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