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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RifleKuhl Barrel Cooler, Red

Product ID: 153256089

Details

Brand
MagnetoSpeed
Color
Red
Material
Polyurethane
Package Information
Box
Product Dimensions
3.25"D x x
Item Weight
0.2 Pounds

🌀Turbocharger-inspired impeller for max airflow

🔧Replaceable 50 Micron air filter for lasting performance

🧲Strong neodymium magnet for secure attachment

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MX$4157

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Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Keep your barrel cool and your shots hotter! 🧊

MAGNETIC LOCKDOWN - Powerful neodymium magnet ensures your cooler stays locked in place, no matter the action.
DUAL FUNCTION DESIGN - Not just a cooler—also serves as a chamber flag, enhancing safety during shooting activities.
CARRY WITH CONFIDENCE - Includes belt and pocket clip for effortless transport—stay ready whether at the range or in the field.
CLEAN AIR EVERY SHOT - Built-in replaceable 50 Micron air filter keeps airflow pure, extending device life and performance.
TURBOCHARGED COOLING POWER - Innovative impeller pushes ambient air deep down the barrel, slashing heat buildup and boosting shooting precision.

The MagnetoSpeed RifleKuhl Barrel Cooler in vibrant red combines cutting-edge turbocharger-inspired airflow technology with a strong neodymium magnet for secure attachment. Lightweight and portable with a belt/pocket clip, it features a replaceable 50 Micron air filter and doubles as a chamber flag, making it an essential accessory for precision shooters seeking enhanced barrel cooling and safety.

Specifications

Brand	MagnetoSpeed
Color	Red
Material	Polyurethane (PU)
Package Information	Box
Product Dimensions	3.25"D x 7.75"W x 1.75"H
Item Weight	0.2 Pounds
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
UPC	855036004207
Size	3.25" x 7.75" x 1.75"
Water Resistance Level	Not Water Resistant
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
Number of Items	1
Part Number	MS_RK

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