New use for auto parts

Surprisingly effective.

http://www.youtube.com/watch?v=haiqFcIXTqs&feature=related

Finally, a use for Fram oil filters!

A friend of mine did this to one of his rifles and it works surprisingly well!

Yeah, I couldn't believe how quiet it was. I wonder though, would a big ol' filter hinder using a sight?

absolutely it does. open sights are pretty much useless with it. My friend had an EOTech red dot on his AR and the line of sight was barely above the filter.

wild. i would like to see this verified.

nderwater wrote: wild. i would like to see this verified.

it's on Youtube... isn't that enough for you?

I don't know about the efficacy of an oil filter as a suppressor, but I do know that subsonic rounds make a very big difference. Betcha they forgot to mention they were using those...

Example

Wait, obviously not used oil filters? Right?

J/K

EricM wrote: Wait, obviously not used oil filters? Right? J/K

why not? seems like they'd be more fun.

peter wrote: I don't know about the efficacy of an oil filter as a suppressor, but I do know that subsonic rounds make a very big difference. Betcha they forgot to mention they were using those... Example

Yep. A supersonic projectile basically renders a silencer useless.

... and you don't need a fancy oil filter with a spin-on adapter. All you need is an empty 2-liter bottle.

http://www.youtube.com/watch?v=hlv3rAay-cs

In reply to peter:

my first thought too for subsonic rounds

Don't see why it wouldn't work. Same principle as a silencer, absorb and diffuse the escaping gas and most of the sound would be dissapated. In this case, go through the filter element and out the back. Does interfere with sites though.

amazing how much noise of the full auto was not from the bullet escaping the barrel

http://www.youtube.com/watch?v=S-vx3bbBsU8

Excellent video.

The fact that they used an oil filter has very little bearing on how well it worked, the massive volume of the filter compared to a well engineered suppressor is what does the trick. As mentioned, a 2 liter works just as well.

peter wrote: I don't know about the efficacy of an oil filter as a suppressor, but I do know that subsonic rounds make a very big difference. Betcha they forgot to mention they were using those... Example

Just about any .22 round out of. A pistol will be subsonic, the 10/22 rounds were supersonic but all you heard was the action and the crack from the round. The full auto was still pretty loud but I'm sure would have been much worse without the can.

Strizzo wrote:

peter wrote: I don't know about the efficacy of an oil filter as a suppressor, but I do know that subsonic rounds make a very big difference. Betcha they forgot to mention they were using those... Example

Just about any .22 round out of. A pistol will be subsonic, the 10/22 rounds were supersonic but all you heard was the action and the crack from the round. The full auto was still pretty loud but I'm sure would have been much worse without the can.

This, aside from the really hot stuff, .22LR is optimized for a ~14" barrel. I have a Ruger Mk III 22/45 target pistol with the longer of the two barrels, 5.5". There is no sonic crack shooting high velocity ammo in it.

Automatic weapons are loud no matter what you do on account of the action cycling. If you want really quiet you go with a bolt action or single shot.