Dealer Site
Want a Graf & Sons dealer account? Apply now to see our wholesale prices and shop online. Already have an account? Sign in. Not a dealer? Shop our retail site.


Item #:KROIL
Log-in or apply for an account
to see dealer prices.
Availability:In Stock
Shipping:This product cannot be shipped by the United States Postal Service or via air.
Read 6 Reviews

Product Information

Kroil creeps into millionth of an inch spaces, dissolves rust, lubricates and quickly loosens frozen metal parts, frees rusted bolts, frees frozen shafts. Dissolves dried grease and oil, displaces water, without harming metal. Works great for getting underneath and loosening built-up carbon, copper and lead fouling in shotgun, rifle and pistol barrels. When a surface is wet with Kroil, it will not corrode.


WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to -

Read 6 Reviews - Average Rating: 4.3 stars

Kroil is the best.

By Leonard G. on Aug 27, 2020
I've used Kroil for many years for a variety of things, from rusted nuts and bolts to cleaning old tools, and as a fantastic gun cleaning solvent. Between Kroil and REAL Break-Free CLP (Not the knock-offs permeating the Amazon market...) You don't need anything else in your gun maintenance kit. Maybe a couple ounce of good heavy waterproof grease....(the red stuff..) Kroil Rocks!

Great for rust removal and it gets the lead out!

By Eric V. on Jun 03, 2020
I use Kroil a lot for removing lead after shooting cast bullets through my handguns. I run a soaking wet patch through the bore and let it sit for a half hour or so. Then I brush the bore with a wire brush and the lead comes out in flakes. Occasionally, it takes two treatments but usually one is enough. Then I clean the bore as normal.

I also use it if any of my equipment gets a rust spot. I will apply the Kroil liberally, let it sit for a while, then eith brush the are with a still nylon or brass brush, or I have used a nickle to rub the spot on blued firearms. Just hard enough to remove the sport. It works!

It is just amazing!

By Doug F. on Mar 31, 2020
I use it every time I remove a factory barrel. I simply tip the action/barrel muzzle facing down, then pour a bit of Kroil into the open action. It just needs to be in the action on top of the barrel threads. Let it soak over night, be sure muzzle is facing down and verticle. The next day the barrel is so easy to break free!!


By Michael K. on Dec 13, 2018
I just cleaned three rifles with this junk and cannot see what the hype is about. I have used much better products in the past. Sorry I bought two cans of this stuff.


By Tom B. on Nov 07, 2018
Have used Kroil for 15 years,I shoot moly coated bullets,its the way to clean after shooting.

Great product!

By Tim M. on Aug 20, 2018
I have been using Kroil for many years, it’s a great product for cleaning and preserving guns and also the penetration properties of this oil makes it perfect for freeing up “frozen” parts.
Was this page helpful? Submit your own rating by logging in.