Unknown OG 6.5 & Airlock Zero Gravity 6.5

[Q_Sertorius]

Sorry a bit off optic but how do you keep your harvester at 11 oz? I’ve shot a few thousand rounds through mine and it’s up near 14 ounces now


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Have you ever cleaned it?

 

[Gettincloser]

You might need to clean that thing!

My buddy is about to release a suppressor cleaner to the market. I am pumped about it!

View this content on Instagram

View this content on Instagram

There are other systems (CLR, and high frequency cleaners and such). But if your suppressor is that much heavier... it might benefit from some colon cleanse!

 

[TimberHunter]

Have you ever cleaned it?

I’ve called and read the manual that they don’t want anyone cleaning it and will void the warranty


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[TimberHunter]

You might need to clean that thing!

My buddy is about to release a suppressor cleaner to the market. I am pumped about it!

View this content on Instagram

View this content on Instagram

There are other systems (CLR, and high frequency cleaners and such). But if your suppressor is that much heavier... it might benefit from some colon cleanse!

I deleted insta a while ago because I was wasting too much time on there haha. Does his use solvents?

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[Gettincloser]

I deleted insta a while ago because I was wasting too much time on there haha. Does his use solvents?

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Yes, it uses a ph neutral solvent that does not damage gaskets or bushings.

Here is a YouTube video that should work. This is his partner talking about it. Not my favorite video explaining it. Mike however does a great job. Seeing it 1st hand is very impressive. I am waiting for the final product as it is stainless vs the acrylic demo models.

 

[AZ_Hunter]

Dremel that adapter to fit and get the comparison going


…please.

 

[ebrownw2]

Time has been prioritized elsewhere, but yesterday I had a couple of hours to make a quick trip to my local range. The plan was to shoot both cans on a 16” 223 and a 18” 6.5cm comparing my perceived sound suppression, and their measured temps.

This Tikka 223 I’d only shot once prior, to sight it in. I could have sworn it was 5/8-24 but I discovered the truth is it’s 1/2-28. I’ll have to order yet another adapter. Rokslide kool-aid stains all over that one:



So I only compared them on the 18” 6.5cm which thankfully, due to the foresight of some wise men from Tennessee, was threaded 5/8-24.

 

[ebrownw2]

Both were around the oddly balmy December 26 air temperature of 80 degrees to begin. I fired four shots fairly quick, within 15-20 seconds. The OG65 measured 176 degrees and the Airlock 6.5 234 degrees.


The airlock seemed a tad bit quieter.

I observed more heat mirage from the OG65 despite it measuring 58 degrees cooler. That didn’t make sense. I switched them back for two more shots each just to listen again.

The difference in sound suppression between the two is really negligible, but if pressed to chose, I’d say the Airlock is quieter.

Again the Airlock was hotter (189 vs. 141) Again I saw more mirage in my scope with the OG. Somebody smarter than me will have to figure that one out. Both will end up wearing covers which should mitigate any issues on that front for my use. I’m looking for recommendations on those if you fellows want to help me out.

 

[General RE LEE]

Both were around the oddly balmy December 26 air temperature of 80 degrees to begin. I fired four shots fairly quick, within 15-20 seconds. The OG65 measured 176 degrees and the Airlock 6.5 234 degrees.


The airlock seemed a tad bit quieter.

I observed more heat mirage from the OG65 despite it measuring 58 degrees cooler. That didn’t make sense. I switched them back for two more shots each just to listen again.

The difference in sound suppression between the two is really negligible, but if pressed to chose, I’d say the Airlock is quieter.

Again the Airlock was hotter (189 vs. 141) Again I saw more mirage in my scope with the OG. Somebody smarter than me will have to figure that one out. Both will end up wearing covers which should mitigate any issues on that front for my use. I’m looking for recommendations on those if you fellows want to help me out.

Could it be the OG goes over the barrel and the hot surface is closer to the objective of the scope vs an out front can? Just a thought.

 

[ckleeves]

Could it be the OG goes over the barrel and the hot surface is closer to the objective of the scope vs an out front can? Just a thought.

I bet that’s it, it seems like the longer the barrel the less mirage you see and the OG would basically be like a 3.5”-4” shorter barrel.

 

[Lawnboi]

Could it be the OG goes over the barrel and the hot surface is closer to the objective of the scope vs an out front can? Just a thought.

The back of an OG dosnt get all that hot

 

[AZ_Hunter]

More surface area for mirage to generate

 

[AZ_Hunter]

So the bottom line it appears from all the comparison threads coming out lately that Airlock is reigning supreme from a sound perspective, but also achieving that with a from factor advantage. That’s pretty impressive.

 

[Q_Sertorius]

So the bottom line it appears from all the comparison threads coming out lately that Airlock is reigning supreme from a sound perspective, but also achieving that with a from factor advantage. That’s pretty impressive.

Form factor advantage?

 

[Jake Larsen]

So the bottom line it appears from all the comparison threads coming out lately that Airlock is reigning supreme from a sound perspective, but also achieving that with a from factor advantage. That’s pretty impressive.

And a not insignificant weight advantage also. For the ounce counters among us…


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[ebrownw2]

Form factor advantage?

Absolutely. It’s smaller, lighter, throws off less mirage, and will thread onto anything with 5/8 threads regardless of it’s adapter diameter.

 

[AZ_Hunter]

Form factor advantage?

Smaller and lighter

 

[ebrownw2]

FYI the Precision Armament M4 muzzle thread adapter WILL NOT fit in the OG6.5. Wouldn’t even get to the threads.


If it had, I would have done a SxS comparison today between 20” 223s. It instead turned into a comparison between the Airlock 6.5 and my Silencerco Omega 30 cal while the OG6.5 sat on the sidelines again.

We only shot 50-60 rounds through each. All four people at the range agreed the Airlock was a lot quieter than the Omega, which does have a brake on the end. Recoil mitigation seemed equal.

Obviously it didn’t heat up like it did on the 18” 6.5cm. After 4 shots it was 138 degrees. A ten shot string got it into the 180s.

Hopefully I can make these adapters work as I have a few other rifles currently threaded 9/16. Going to try to grind those corners down. It should work, but those of you considering an OG6.5 should be paying close attention if you have barrels anything other than 1/2-28 or 5/8-24. There’s not much room for an adapter in there. I’m guessing this why Unknown offers their own adapter, which unfortunately doesn’t come in 9/16.

 

[Q_Sertorius]

Absolutely. It’s smaller, lighter, throws off less mirage, and will thread onto anything with 5/8 threads regardless of it’s adapter diameter.

I didn’t observe less mirage when I fired them - with or without suppressor cover. The ZG started showing mirage about twice as fast as the OG.

 

[ebrownw2]

I didn’t observe less mirage when I fired them - with or without suppressor cover. The ZG started showing mirage about twice as fast as the OG.

That’s what logic tells me I should have observed, but my eyes did not. Twice. The difference was just as obvious to me just in the opposite direction. Once I get these adapters sorted I’ll do another SxS comparison, on separate guns that are the same. What I observed was while switching the cans back and forth on the same gun, so the barrel temp changing etc could have influenced things.