Lynx 180B Upper Receiver Info Thread

Here's the side plate installed on the upper. The right hand charge model wont have a slot on the side plate. The ambi unit will have slot like the left hand charge model.
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No dust cover is needed at all. A MCR bolt seals the ejection port great. Our own BCG will also seal the ejection port.
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Ustauk said:
If you want to go with a rifle length gas system and a pencil barrel, you may want to wait on the SBI DI BCG. When testing was done on an early production version of a competitor's piston 180 firearm that used a rifle length piston and gas block hanging off a pencil barrel developed an MOA spread on rapid fire, similar to when a heavy suppressor is fitted on a What Would Stoner Do Pencil-barreled AR-15. The competitor has increased the barrel's thickness beyond pencil to compensate. If there is only a lighter AR-15 style gas block and a gas tube hanging off a pencil barrel with a rifle length gas port on a Lynx, it should not have any issue. A carbine length piston and AR-18 type gas block on a carbine length gas-ported pencil barrel is unlikely to have the issue either, as that brings things closer to the gun's center of gravity, and thus no problems have been reported from anyone putting a pencil barrel on a 180 variant with a carbine length port, to my knowledge.
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I think using a single review of a completely new firearm with a totally different barrel nut system, gas system, handguard mounting system etc to extrapolate that its issues will be present on ALL rifle length AR 180s with pencil barrels is a bit ridiculous. Any one, or a combination of all those variables could have equally been the culprit to the "accuracy issues" (accuracy was totally fine imo).

At any rate i am excited by the idea of being able to use quality proven brand name AR pencil barrels in a 180 (like my faxon 18.6 that has been collecting dust) so i may have to invest in one of these uppers to test it out.
 
apexanimal said:
I think using a single review of a completely new firearm with a totally different barrel nut system, gas system, handguard mounting system etc to extrapolate that its issues will be present on ALL rifle length AR 180s with pencil barrels is a bit ridiculous. Any one, or a combination of all those variables could have equally been the culprit to the "accuracy issues" (accuracy was totally fine imo).

At any rate i am excited by the idea of being able to use quality proven brand name AR pencil barrels in a 180 (like my faxon 18.6 that has been collecting dust) so i may have to invest in one of these uppers to test it out.
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By all means, this isn't necessarily universal; just because that competitor's firearm's barrel wasn't stiff enough as is, or the WWSD Stoner's barrel shifted with the suppressor doesn't mean that all well. And the accuracy of the tested rifle was still enough that people were buying a limited run of the firearm with the original pencil barrel before the main run came in. So Your Mileage May Vary, do whatever floats your canoe :) .
 
Ustauk said:
By all means, this isn't necessarily universal; just because that competitor's firearm's barrel wasn't stiff enough as is, or the WWSD Stoner's barrel shifted with the suppressor doesn't mean that all well. And the accuracy of the tested rifle was still enough that people were buying a limited run of the firearm with the original pencil barrel before the main run came in. So Your Mileage May Vary, do whatever floats your canoe :) .
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It would be interesting if a .625 piston gas block was available, we could test this out with a faxon pencil on one of these 180 platforms. I dont think itd be much less accurate than in its DI form, reasoning being that the bullet should be out of the barrel before the piston starts any substantial travel rearward.
 
No plans for brass deflector? Also, I like to think dust cover is ideal even if the BCG was to "cover" the inner part of the rifle since whatever is collected on the exposed surface of the BCG is prone to entering the inside if not wiped off before firing, but it might be just me.
 
james_o said:
Dose the top of the rail on the upper line up with the rail on the hand guard?
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Not perfectly. There's a lot of variance between different handguards. But it always gonna be a tiny bit high, but it's close enough that it doesn't matter. We had to make it a bit higher to offer to make the rail to proper spec so all optics mounts work. We are looking at making some handguards for this upper.
 
kcrlawlghks said:
No plans for brass deflector? Also, I like to think dust cover is ideal even if the BCG was to "cover" the inner part of the rifle since whatever is collected on the exposed surface of the BCG is prone to entering the inside if not wiped off before firing, but it might be just me.
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You really don't need a dust cover. Keep in mind there's a gaping hole on the other side of the receiver for the charging handle. It's just for looks on a 180. Personally I've never had an issue with dust and dirt ingress running 180's in 3 gun matches in all conditions.
 
SpectreBallistics said:
Not perfectly. There's a lot of variance between different handguards. But it always gonna be a tiny bit high, but it's close enough that it doesn't matter. We had to make it a bit higher to offer to make the rail to proper spec so all optics mounts work. We are looking at making some handguards for this upper.
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If you make a handguard pleeease keep it as thin as possible. I think everyone is tired of big chungus handguards. Also qd would be cool for accessing the gas system for easy cleaning.
 
SpectreBallistics said:
Not perfectly. There's a lot of variance between different handguards. But it always gonna be a tiny bit high, but it's close enough that it doesn't matter. We had to make it a bit higher to offer to make the rail to proper spec so all optics mounts work. We are looking at making some handguards for this upper.
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I had a feeling you had to raise it in order to make it milspec, and that was my next question if you are looking at making rails to match. Can’t wait to see!
 
Will you be producing a piston BCG that will use your improved charging handle, or will the DI BCG also work for a Lynx built with a piston? Thanks!
 
We did some upper testing today. Our upper runs great. ZERO FAILURES.

The production model of the upper will have a brass deflector.

We tested it with both WK and MCR internals.


We also did a snow test. Ran flawlessly.

 
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