• *The discussion of the creation, fabrication, or modification of airgun moderators is prohibited. The discussion of any "adapters" used to convert an airgun moderator to a firearm silencer will result in immediate termination of the account.*

Huma vs Behemoth

The bohemoth will be better than your mod30 for sound suppression, but no different to a mod 40 or 50. Also from what I hear, the reflex shroud doesn’t make a big enough difference to offset the cost.
Good to know, yeah I have heard similar about the reflex shroud before. I may just go with the non-reflex version for now. I do like the look of the reflex kit with the hand guard, though that is a debate of it's own. For now I'm more concerned about noise. I do run my L2 around 150 BAR, so it did make me wonder if the reflex is more beneficial at higher pressures. likely very minimal though if anything.

Is the discussion about the reflex shroud buried in the L2 mega thread?

I'd like to read more about that.
I personally found out about the reflex shroud not being too necessary by emailing Brian from EdGun West. I'm sure there are others who have brought this up at this point though too.
 
Good to know, yeah I have heard similar about the reflex shroud before. I may just go with the non-reflex version for now. I do like the look of the reflex kit with the hand guard, though that is a debate of it's own. For now I'm more concerned about noise. I do run my L2 around 150 BAR, so it did make me wonder if the reflex is more beneficial at higher pressures.


I personally found out about the reflex shroud not being too necessary by emailing Brian from EdGun West. I'm sure there are others who have brought this up at this point though too.

Thanks. I have the 250mm barrel but have been intrigued by how compact it is with 350mm, reflex shroud + Behemoth. So for me it would be a lot more expensive with the barrel swap.

I think I'll do what @Larcat has done & run 250mm, STO insert + Striplin adapter. Then run a mod at home but not when I'm out in the woods. Not sure which mod yet. Would like no POI shift with & without mod.
 
One big advantage of the reflex shroud is that it has an o-ring that creates additional friction that helps keep the moderator on. I've had the non-reflex version come loose which resulted in pellet clipping which was no fun.

If there is a difference in sound between the two configurations with an equal number of sections, I can't hear it. Tested in .25 and .30.
 
  • Like
Reactions: MicrosoftChad
One big advantage of the reflex shroud is that it has an o-ring that creates additional friction that helps keep the moderator on. I've had the non-reflex version come loose which resulted in pellet clipping which was no fun.

If there is a difference in sound between the two configurations with an equal number of sections, I can't hear it. Tested in .25 and .30.
I'm glad you mentioned that, I've been curious if the moderator with QD ever comes loose. Good to know about the sound levels as well for further confirmation. Thank you!
 
Let me just add a free plug for Francisco in Spain who sells Behemoth parts separately: you can buy just the reflex shroud and the first section that mates to it if you want to upgrade your existing non-reflex setup if you want to experiment...

Also, a fun fact: the non-reflex Behemoth body will still mate to the reflex shroud (obviously without using its internal volume but it makes it easy to quickly compare both setups side by side without unscrewing the shroud).
 
Last edited:
  • Like
Reactions: SHOMER
STO, striplin, behemoth quieted mine down to where the bark is no problem. Dry fired indoors over the weekend, not even startling.

The QD can come loose if you dont lock it up. It is VERY robust, so don't go easy on it IMHO. Crank it reasonably hard in one motion and it doesn't come off.

35-40 fpe is ripping right through duct seal for me though, and I can't quiet down the thump against the metal bscking of my trap :(

Above combo did quiet it enough that impact noise is the problem instead of pneumatic nailgun noise. Nice to have then flexibility of quiet-ish with just the STO, too.
 
STO, striplin, behemoth quieted mine down to where the bark is no problem. Dry fired indoors over the weekend, not even startling.

The QD can come loose if you dont lock it up. It is VERY robust, so don't go easy on it IMHO. Crank it reasonably hard in one motion and it doesn't come off.

35-40 fpe is ripping right through duct seal for me though, and I can't quiet down the thump against the metal bscking of my trap :(

Above combo did quiet it enough that impact noise is the problem instead of pneumatic nailgun noise. Nice to have then flexibility of quiet-ish with just the STO, too.
I wish I had just bought my L2 with the stock shroud now, unfortunately it didn't come with my sparrow kit that I bought.

Okay, I may just opt for the non-reflex version for now and if anything buy the necessary parts to convert. I was a little on the fence after dorcula's mention of it being loose, but I definitely will just get it nice and snug.

Thank you
 
  • Like
Reactions: Larcat
I wish I had just bought my L2 with the stock shroud now, unfortunately it didn't come with my sparrow kit that I bought.

Okay, I may just opt for the non-reflex version for now and if anything buy the necessary parts to convert. I was a little on the fence after dorcula's mention of it being loose, but I definitely will just get it nice and snug.

Thank you

The factory shrouds come up on the Classifieds now and then. Hard to search for since some people call them moderators and others call them shrouds.

What caliber is your L2?
 
On a related note, I'm experimenting with 3D-printed inserts for the the Behemoth on my L2 (currently, a .25 running at around 65fpe). Figured that if I put a baffle in the first section, it would force more air into the reflex chamber. Seems to work very well so far as far as the sound signature is concerned. Surprisingly, the non-reflex version benefits from the blast baffle as well. There might be positive effects on accuracy, too. Work in progress...

behemoth_baffle_1.jpg


behemoth_baffle_2.jpg
 
The Huma 40 and Behemoth are REALLY similar, and by all accounts similarly effective.

I went with the Behemoth because the QD option on the Huma is trash while the Behemoth one is awesome.
I think the behemoth will be a nice upgrade. My mod 30 is for .30 cal and was sent with my .22 sparrow kit. Not quite sure why, but didn't think about it until later on that it likely isn't as efficient in .30 cal. I'm thinking the behemoth will be a fairly noticeable difference. I'm holding off until I have a molecular sieve filter for my pump. Should have that soon enough.
 
The factory shrouds come up on the Classifieds now and then. Hard to search for since some people call them moderators and others call them shrouds.

What caliber is your L2?
.22 cal, I'm probably going to hold off on buying it for now and just get the behemoth. Realized I need to get a better filter system for my pump so going to try to save some money and just go for the moderator for now, and get the new filter. Down the revisit the shroud idea most likely.
 
On a related note, I'm experimenting with 3D-printed inserts for the the Behemoth on my L2 (currently, a .25 running at around 65fpe). Figured that if I put a baffle in the first section, it would force more air into the reflex chamber. Seems to work very well so far as far as the sound signature is concerned. Surprisingly, the non-reflex version benefits from the blast baffle as well. There might be positive effects on accuracy, too. Work in progress...

View attachment 335055

View attachment 335056
Makes me want a 3D printer, that's awesome!