Caldwell’s New Accumax AR-15 Barrel Cooler – SHOT Show 2016

Here’s an interesting idea: a rifle barrel cooler that clips right into the mag well of an AR15.

The Accumax AR-15 Barrel Cooler works by blowing air through your barrel’s bore. Pretty simple, really. Here are some manufacturer specs:

Fits any Mil-Spec AR-15
High pressure fan with dual motor bearings for long life
Integral wind tunnel directs air through the chamber
Powered by 12v Li-ion rechargeable battery
3-4 hour run time per charge
Item: 390247
MSRP: $64.99

They claim it will cool your barrel “in half the time,” so presumably forcing air of ambient temp through your barrel will cool it twice as quickly as it would cool if you just left it alone. And that can be nice. I personally hate waiting for a barrel to cool down.

But that brings me to my next point: This should work for bolt-action rifles. I gotta say, I rarely get my AR hot enough to matter, but more than once I’ve been shooting hunting ammo in a bolt gun and wanted the barrel too cool down more quickly. It doesn’t look like it would be too difficult to adapt this thing to work with bolt action rifles–hint, hint.

Russ Chastain

Editor & Contributing Writer Russ Chastain is a lifelong hunter and shooter who has spent his life learning about hunting, shooting, guns, ammunition, gunsmithing, reloading, and bullet casting. He started toting his own gun in the woods at age nine and he's pursued deer with rifles since 1982, so his hunting knowledge has been growing for more than three and a half decades. His desire and ability to share this knowledge with others has also grown, and Russ has been professionally writing and editing original hunting & shooting content since 1998. Russ Chastain has a passion for sharing accurate, honest, interesting hunting & shooting knowledge and stories with people of all skill levels.