oil filter silencer BATFE registered

Discussion in 'NFA Firearms & Related Items' started by jack404, Jun 3, 2012.

  1. jack404

    jack404 Former Guest

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  2. armoredman

    armoredman New Member

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    Needs a high sighting system, or it's rough aim and hope.
    Interesting though.
  3. ponycar17

    ponycar17 Active Member

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    Neat concept...
  4. soundguy

    soundguy Well-Known Member

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    interesting. wonder how it sounds on a subgun using subsonic ammo... neat lil adapter.
  5. time2shoot

    time2shoot Active Member

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    hhhhmmmmmmm.
  6. 883n

    883n Former Guest

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    I read elsewhere that the oil filter is treated by the BATFE as a wipe in that it can be replaced when shot out. If this is true, then a person can replace the filter when it wears out unlike baffles on a real quality silencer.

    I would have liked to see accuracy tests though. I bet accuracy sucked with the bullets touching the innards of the filter. I have shot a revolver and a semi-auto with the silencer blocking the sights, it really degrades accuracy past ten yards.

    883
  7. cpttango30

    cpttango30 Guest

    This is all fine and dandy until some one tries to use a used filter and catches it on fire and burns up their plastic gun.

    Why would you want a quiet gun if you couldn't shoot anyways?
  8. jack404

    jack404 Former Guest

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    pest control without disturbing your neighbours as in NZ , polite folks them kiwi's dont want to disturb your sleep in by blasting some bunnies so suppressors are allowed and in many places expected..
  9. BlackEagle

    BlackEagle Well-Known Member Supporting Member

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    Health and safety over here got supressors approved. The people keeping deer, foxes and rabbits under control are in danger of loosing their hearing if exposed to too many loud bangs.

    Nice concept. Just how thin can an oil filter be?
  10. jack404

    jack404 Former Guest

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    from memory most have to take a pulse of 100 PSI for so long and dissapate it back via the filtered section ( the multiple outer holes in the base )

    i was surprised what they take as they use em for hydraulic filters as well ..
  11. soundguy

    soundguy Well-Known Member

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    since they are shooting thru the center.. on mst filters.. it's really not touching anything.

    i'd get one with no drainback valve, and with a conventional plete media vs a floss media.. but otherwise it's an open cavity down the center and then the can top.. occasionally there is a single baffle of metal at the top from the media cap.. that would just serve to act like an extra metal wipe... that and the exit wound inthe can itself.

    I imagine those long fuel and hyd filters work best. no ADB to deal with, and a longer baffle and air space.

    almost neat enough to get one.. if i neede dit and had the 300$ laying around.. :)
  12. jjmitchell60

    jjmitchell60 Active Member

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    All they are registering is the adapter. You can replace the oil filter anytime. I saw them and wondered the same thing as to teh filter. I have sent my NFA truct, form 4 and my $200 to the BATFE for my suppressor i bought but my next one will be a multi caliber made myself on a form 1. It will in part be as teh oli filter deal but will have a smaller metal outer tube tat I change the insides out to meet the caliber. Several companies are making the multi-caliber ones already.
    The BATFE has gotten to a point if you can sctratch number on a PVC pipe, send in a form 1 and form 4 along with $200 they will issue you the stamp. Must have to pay for the "Fast & Furious" mess I reckon.
  13. soundguy

    soundguy Well-Known Member

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    that's a good thing.

    they shouldn't be inthe business of telling people they can't own a certain number of things.

    if it meets the rules. is serialized and registered.. it should be good to go.

    the fewer rights they abridge.. the better..
  14. Grizz

    Grizz Active Member

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    I wonder how many rounds of .22lr you can put through an oil filter before it no longer quiets good? This is a really cool idea if you can find some skinny oil filters and have $300 laying around
  15. 883n

    883n Former Guest

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    The BATFE says that a silencer part by itself it a silencer. You can not have extra baffles or other parts layng around, nor can you make replacement bafffles for your form 1 silencer unless you pay another $200 tax.

    What companies are making these multi-caliber silencers? Surely they are not supplying the buyer with multiple internals?

    883
  16. soundguy

    soundguy Well-Known Member

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    there obviously seems to be a departure from the bondage and discipline 'any part of a silencer is a silencer' if the only part being registered is a thread adapter cap that any handy person could turn out in his backyard machine shop with a 5$ engine part and a welder and any of a number of sources for a matching bbl thread from homegrown to a cut up 30$ bbl extension...all it does is adapts the barrell threads to standard oil filter threads.

    obviusly the atf must be treating the oil filter as some disposable product.. and not part of the supressor itself.

    reminds me of when the atf finally decided a shoe string wasn't a machine gun...
  17. soundguy

    soundguy Well-Known Member

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    since the projectile is only touching the very end cap of the filter, or perhaps a media cap and end cap of the filter.. then those 2 pieces are acting like wipes. since both metal, once enough 22lr goes out, there will be a thousandths clearance on all sides and no more metal touching metal before long, and you will have mor eor less a slightly louder 'metal wipe' supressor I'd expect the initiol shots to be quietist till the metal exit wounds wear till they are a fraction larger than the projectile, and from then on.. it gets a hair louder, adn really doesn't change much past that. it's not liek the holes will get any bigger with nothing touching them.. and the inside of the filter itself is not having contact with the projectile assuming you use a filter with a hollow core and no DBV. i bet a person could nit a napa and dig thru the shelves and find a small form factor oil fitler that would not block a good peep site or holo site setup.
  18. 883n

    883n Former Guest

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    I have read on other websites that the ATF says wipes are a dispoable part and can be replaced as long as the original ones are destroyed first. It appears that the ATF is saying that a oil filter is a same kind of thing as a wipe.

    The oil filter as a silencer idea still still leaves something to be desired though. It is heavy, bulky and will block the sights on most firearms equipped with sights. I'm sure there is a good reason why the guys in that video did not do an accuracy demo, it probably ruins accuracy.

    When did that happen? I have a few semi-autos and plenty of string at home.

    883
    Last edited: Jun 7, 2012
  19. soundguy

    soundguy Well-Known Member

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    do a google searc on shoestring machinegun..

    basically guys were taking thumbhole stocked ak, sks, mak 90 type guns. you tie the shoestring to that big bolt handle on the right, run it thru the thumbhole stock, out hte left side then thru the left side of the trigger guard, in front of the trigger, out the right side of the trigger guard, and then upwards a bit where you hold tension on it with your right hand.. you end up kinda palming the butstock with the heel of your right hand whilst holdingthe shoestring between thumb and pointer finger, wedging the butstock into shoulder, and possibly laying head neck into it to peer downthe iron sites doing so, with left hand supporting forestock as normal.

    chamber a round before any tension on shoestring..

    start taking up tension on the shoestring by bending thumb/finger. you eventually hit that magic spot where there is enough tension to trip the trigger, gun fires, bolt blows open.. when it does, spent is ejected, shoestring relaxes, trigger resets, then bolt starts going home, chambers a new round, and as bolt goes into battery, tension comes up on the shoestring you are holding and if you kept tension up, she fires again.. and keeps doing this untill you run out of ammo, jamb, bolt holds open or you release tension.

    lots of variables.. obviously you need something that firest from a closed bolt, and has a compatible shaped but stock, and you need a gun that can fire with it being slightly out of battery... like a loose sks ak rifle. ie.. it is tripping the trigger as bolt goes into battery..

    there wasa big hub-bub about it and lots of discussion on registering shoestrings :) and last I heard atf finally decided that a showstring wasn't a machinegun. I guess it works the same way as a tribber palpitator.. 1 shot expended for each time the triger is tripped.. reminds me of similar thinking of a galin setup. ie, it's legal if you use a mechanical hand crank, but it's illegal if you use a power drill on it instead of a mechanical hand crank.

    here's the ruling where atf decided a 14" shoestring was a machine gun in 04

    later in 07 they decided it was only a machinegun it it was installed on a SA rifle.. :)

    http://www.everydaynodaysoff.com/2010/01/25/shoestring-machine-gun/


    :)



    soundguy
  20. 883n

    883n Former Guest

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    I was aware of the "string is a MG" letter, but had not heard of any change of heart by the BATFE. Too bad the string is still a MG when attached to a semi-auto rifle. :(

    883
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