How much does the replaceable filters cost?

Mine came with several extra ones and I’ve not had to change it yet in over a year. If you email the company they will send you some. Last year they would do this at no charge. And it’s a simple make your own out of 50 micron filter paper. That will end up costing about .01 each

Does this fit a 300 Win. Mag?

Hello. The RifleKuhl Stem will fit most long action receiver brands. The Stem will be long enough to seal at the breech face or be slightly off the breech face. If you have any other questions, please contact us at info@magnetospeed.com or call us at 512-284-8161 ext 1. -The Magnetospeed team

how well does this work on suppressors?

It works well for the barrel. It is built better that the cheaper alternatives. Additionally it has a dust filter which is useful when shooting in the desert. However, specifically cooling a can, it works as just as well as cooling the barrel since it is attached. Not super fast but much quicker than without. It is particularly beneficial during load development and shooting matches where the breaks between the strings of fire are short. Nothing beats water but don't expect your can to last forever if you go the quenching route.

Anyone figure out a way to use this with a muzzleloader (without pulling the breech plug)?

Hello. This was not designed for muzzle loaders. It is designed for standard centerfire or rimfire breech loaded firearms. The flange seal can seal breech/chamber faces from .22lr up to .338LM. If you have any questions, please let me know. rhey@magnetospeed.com

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Description

🔥 Keep Your Cool, Shoot Like a Pro!

SECURE AND RELIABLE - Strong neodymium magnet ensures your device stays in place, no matter the conditions.
GLOBAL COMPATIBILITY - Designed for international use, ensuring you stay cool wherever your adventures take you.
MAXIMIZE YOUR COOLING - Experience unparalleled cooling efficiency with our innovative chamber seal.
ON THE GO CONVENIENCE - Easily carry your cooler with the included belt/pocket clip for ultimate portability.
TURBOCHARGED PERFORMANCE - Harness the power of a turbocharger-inspired impeller that pushes ambient air down the barrel.

The MagnetoSpeed RifleKuhl Barrel Cooler is engineered for optimal cooling efficiency with a chamber seal and turbocharger-inspired impeller. It features a convenient belt/pocket clip for portability and a strong neodymium magnet for secure attachment, making it the perfect companion for shooting enthusiasts.

Specifications

Brand	MagnetoSpeed
Color	Red
Package Information	Box
Product Dimensions	3.25"D x 7.75"W x 1.75"H
Item Weight	3.2 ounces
Special Feature	Turbocharger Inspired Impeller, Retractable Nozzle, Chamber Flag Functionality
Included Components	Belt/Pocket clip, CR123 lithium battery
Recommended Uses For Product	Rifle Barrel Cooling, Chamber Flag during Shooting Activities
Model Name	RIFLEKüHL
Pattern	Solid
Insulation Material	Polyurethane Foam
Chamber Depth	3 Inches
UPC	855036004207
Manufacturer	MagnetoSpeed
Item Package Dimensions L x W x H	7.64 x 3.15 x 1.69 inches
Package Weight	0.11 Kilograms
Item Dimensions LxWxH	7.75 x 3.25 x 1.75 inches
Brand Name	MagnetoSpeed
Part Number	MS_RK

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