BIT: Battery Powered AR-15 Cooling Fan

[Combat Controller]

Real guns has sort of what you are looking for.

[HTRN]

Another idea is a dummy cartridge, a valve, a small Co2 cylinder like what's used in Paintball, and a regulator. The idea is to squirt some CO2 down the barrel at say, 300-400 PSI. Since things get cooler as they expand, it will suck alot of the heat out of the barrel.


HTRN

[mekender]

Another idea is a dummy cartridge, a valve, a small Co2 cylinder like what's used in Paintball, and a regulator. The idea is to squirt some CO2 down the barrel at say, 300-400 PSI. Since things get cooler as they expand, it will suck alot of the heat out of the barrel.


HTRN

Wouldnt you run the risk of either forming ice crystals in the barrel or cracking the metal by cooling it off to quickly?

[HTRN]

No, because you're not cooling it off that fast, just giving a squirt down the barrel.

You can get CO2 to form Ice though, I know from first hand experience with a CO2 bottle with a bad valve. Entire thing vented in 15 seconds, and I wound up "burning" my hands picking it up.


HTRN

[Durham68]

Are you really overheating barrels with your semi-auto AR though?

No. It came to mind while I was thinking about the hubub around an M4 overheating during combat in Iraq or Afghanistan.

Real guns has sort of what you are looking for.

Sort of. At least that gadget proves what Chris said. The rate of cooling would not be worth the weight or effort of rigging it up to the rifle.

Another idea is a dummy cartridge, a valve, a small Co2 cylinder like what's used in Paintball, and a regulator. The idea is to squirt some CO2 down the barrel at say, 300-400 PSI. Since things get cooler as they expand, it will suck alot of the heat out of the barrel.


HTRN

Now that's a nifty idea.

[Rich]

Let's go green and make it solar powered.

That way, we could get start up money and later bail out money from the gummint.

[HTRN]

Stolen from numerous Sci Fi novels. The "Sten" willygun for example.

More of a "great minds think alike" actually. Seemed fairly obvious to me 20 years ago after I saw cryospray for the first time.


HTRN

[AZMARK]

Are you really overheating barrels with your semi-auto AR though?

When Chris showed me how to feather fire my AR at Rumpshots Revenge, we got the barrel a tad warm.

[Whirlibird]

I recall a varmint rig that had a water cooled jacket on it on Guns and Ammo some years back.

It would seem fairly easy to run a batch of copper tube around the AR barrel under a free float tube and run connectors through the tube itself to attach some flexible hoses to a cooler filled with ice and a 12v pump. By using a sealed unit you could both stiffen the barrel and make a decent cooling system. But the weight would be somewhat ungainly for actually carrying.