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Jaxom · Senior Member

For my first diy project that I want to do on my custom 2300, I want to build my own muzzle break. I've got an idear in my head, but I need to know what is the common die used to thread the outside of a barrel?

For some reason I wanna say 1/2" unf 20 or something like that. But I just wanted to double check.

Before anyone says it, I'll say it first. I am NOT attempting to build a silencer!!!

Thanks,

Jax

kanyon · Silver Status Member

Alstone · Moderator & Site Supporter

You may find that the barrel on a 2230 is not big enough to take a ½”x20 tpi, so do what I do.

1. Make a slide on adapter from the barrel size to ½”x20, and make your muzzle break to match.

2. Thread the barrel to any thread that will fit and thread the break the same, unless you are going to buy a commercial break, this is the easiest way out.

Al

yourdaddyjoe · Supporting Member

The most common I found in the Military arena is 1/2"-28 UNF
The standard for the AR-15

I just found a good source for the tap and die...

http://www.wttool.com/product-exec/product_id/27517/nm/1_OD_High_Speed_Special_Dies_WT_Import_

http://www.wttool.com/product-exec/product_id/24277/nm/Special_Threaded_Hand_Taps_WT_Import_

Midway USA is about twice as expensive.

Alstone · Moderator & Site Supporter

I think you will find that the standard airgun silencer thread used by most manufactures is 1/2" x 20 UNF also used on .22 Rimfire.

The 1/2" x 28 UNEF thread is only used on larger center fire weapons as a rule, the finer thread gives more hold against higher gas pressures, this size is also used on some airsoft models.

Al

Jaxom · Senior Member

I was going to attempt to draw this out in paintshop, but I just get too frustrated when I can't get lines perfectly straight.

Besides just looking really nice on the end of your barrel, a break is sappose to regulate the vibrations sent down the barrel at the time it's being fired. Personally I think this is more applicable to powdered guns then it would be for air guns. But I could be wrong...probably am.

Basically the break I'm thinking about is really a break/shroud combo. By using two aluminium disks and some aluminium tube.

The first disk would be drilled out so it's just large enough to slip over the barrel. Slide this all the way back to get it as close to the fore grip as possible. No need to worry about obstruciing the stock Co2 access cap, in as much this will be bulk.

Next would be to thread the end of the barrel. And then drill/tap the second disk so it can be screwed onto the end of the barrel. This will actually be the break and I can experiment with different thicknesses and see how it affects the accuracy of the gun. Lastly, take an aluminium tube that has an id of the same size as the od of the two disks...slide them over the two disks and screw down.

As you can see, in as much as the crown of the barrel would be just inside the second disk, and there's no ports or any way of directing the pressure wave that causes sound, there is no way this could be construded as being a suppressor/silencer.

If I had more time...and a bigger shop <evil> I would try to also make a shroud that would cover from breech to end of fore grip. This way it would look like one large barrel/shroud.

Having said all that...I am toying with an idea on how to quiet the sound of my weapons...and still not use or have a silencer/supressor. Just haven't worked out the details yet.

yourdaddyjoe · Supporting Member

Alstone · Moderator & Site Supporter

Hi Joe the good quality airsoft gear tends follows the original, so if the original has 1/2"x28 it seems that the airsoft makers do also.

There is a large airsoft outdoor combat ground near me and the guys who use it tend to mix and match with original military equipment, one of the big makers of silencers in Scotland makes military pattern silencers with the 1/2"x 28 thread especial for airsoft, I've made three silencers so far for these replicas and I have to cut the threads on the lathe because I have trouble getting a tap at reasonable cost.

The thing is air rifles in most of the countries outside the US and Canada that allow silencers, come with the end of the barrel threaded with 1/2"x 20 threads including the new Crosman Discovery. there are one or two makers who use there own threads but this is so you have to buy their silencers, and these are usually specialist guns.

Al

fritz · Silver Status Member

You could just make your break a silencer and not tell anybody... Wink

Not that I would EVER want someone to break a pointless law... Wink

Because that would just be terribly wrong... Wink

Remember that Fritz wasn't around the day you got these ideas... Cool

yourdaddyjoe · Supporting Member

Well.... Al.... I all ready pulled the trigger on the 1/2"-28 tap & die set... Rolling Eyes

so... the price was not that bad with the link that I provided earlier... So I guess I need to add to my order the 1/2"-20 as well... just in case I need to make adapters for other guys...

I have a local customer that wants to run this brake on his 2250 HPA Project...

http://www.midwayusa.com/eproductpage.exe/showproduct?saleitemid=942876

It is the same one he had on his AR-15 before he moved here and had to sell the gun due to the ban on them.

Alstone · Moderator & Site Supporter

fritz · Silver Status Member

Because you Brits have silencers...

Jaxom · Senior Member

Oy! I musta been tired last night.. I ment muzzel BRAKE not BREAK.

Interesting brake there Joe. That's actually along the lines of what I was thinking about in order to muffle the sound of my weapons.

Lemme explain. Back many millenia ago when I was young, had no gray hairs and my knees didn't make crackling sounds when I walked... I went to school for sound engineering. We learned all about sound waves and such in class. And most importantly, the reasoning and logic of making a recording studio "quiet". Don't want any "traveling wilburies" floating around when trying to get a track down.

If you look around at most indoor gun ranges they are set up very simarly to a recording studio. In that I mean they have padded walls often covered in cloth. The cielings are often covered with foam sound proofing (with all those triagnles and such). This all goes to absorb the sound of the pressure wave.

Silencers/supressors work in a simlar fashion. Except that all the sound damping happens inside the unit. What I'm thinking of is an external sound supressing "box" from which to shoot from. It wouldn't have to be super fancy or anything. Large enough for you to shoot from comfortably. Small enough to help contain the sound waves, yet not obstuct a clear view of the area being shot into.

What ever the box is made out of. Some lining of accustical tiles or speaker baffles. Even plain foam could be used if glued along the walls. With a rearward ported brake, the pressure wave would be deflected back into the box and towards the shooter. rather then forward.

Obviously this isn't something that can be taken out into the field, but for those of us with nosey neighbors...It might help...

Alstone · Moderator & Site Supporter

Hey Jaxom have a look at this, I posted it a while ago, and most people took the pi$$. But it would work!

http://airgunhome.com/agforum/viewtopic.php?t=1008&highlight=silencer+tire

Al Idea

kanyon · Silver Status Member