Here's another article on excellent lubes for guns.
What about "miracle products"?
Let's be clear: there are no "new", "revolutionary" lubricant products made for firearms. That's a flat statement, and it's intended to be. All of the lubricants, bases, and additives of suitable use are already well known to the lubricant industry. Specific combinations might be unique, but it's all been tried before - if not necessarily on guns.
There are several such products on the market right now that are simply a well-known boundary additive in a light carrier; at least one of them is a chlorinated ester! These things have been around a long time, and unless you didn't know better the products using them would indeed seem to be "revolutionary." Just remember: any new gun lube is going to be made up of readily available components, perhaps blended especially for the requirement, but will not be a "miracle". 'Nuff said!
Cut to the chase! What should I use?
Let's start with oil. Most people use oils that are way too heavy; thicker is not better! Use a relatively thin oil with the correct properties, and use it very sparingly - most "oil failures" I've seen have been from too much, rather than too little, oil.
Frankly, in terms of mechanical performance, most oils "work"; some are better than others, but everything will make parts move for a while. The weakest area of most oils is in corrosion resistance - and on a gun, corrosion is a bad thing! There have been lots of claims, but those people who have actually taken the time to run experiments to test corrosion on steel have found that the products with the greatest hype are often the worst at corrosion resistance. Not surprisingly, plain mineral oils, such as Rem Oil, score at the very bottom of the list.
One product that scores pretty well in corrosion testing is also the readily available and dirt cheap. It also has good migration, a good boundary lubrication package, is the right weight (thickness) for general firearms use, doesn't oxidize over long periods of storage, and is compatible with a wide range of metals and plastics. In addition, it is recommended by at least one real degreed firearms engineer! Just what is this miracle elixir??
Dexron-type Automatic Transmission Fluid (ATF). That's right, plain ol' ATF. The kind you get at every gas station, auto parts store, and even most convenience stores. Synthetic or regular, either will work just fine. (ATF does have a slight odor to it. If you find that objectionable, a decent alternative that is still readily available is "NyOil." Check your local auto parts store, in the aisle where they keep the miscellaneous lubricants and additives.)
If we were to spec out a "best in class" oil, it would probably be something like Lubriplate's FMO-AW oil, specifically the 350-AW weight. This is an oil designed with very high boundary protection and very high corrosion resistance - especially in the presence of acids, alkalis, and moisture. It is darned near tailor-made for our use!
I'm aware of at least one large coastal police agency using FMO-AW, and they report complete satisfaction with its performance. Unfortunately, it's not (as of this writing) packaged in consumer friendly quantities - 1 gallon pails being the smallest available. If, however, you have a food service equipment dealer near you, they may agree to sell you a small quantity - FMO-AW is designed for food handling equipment. (Ask nicely and bring your own bottle.)
What about grease? Remember that you should grease sliding parts that carry a load - slide rails, sears, and bolt carriers. Again, remember to start with your criteria: must have superb boundary lubricants (particularly when used on double-action mechanisms), preferably of aluminum base, good cold working characteristics, resistant to acids/alkalis and water (especially water), and preferably of a non-staining variety (black grease stains look awful on clothing!)
Many people use Brownell's Action Lube as a popular general purpose grease - it has wonderful boundary lubricants (in fact, it is mostly composed of molybdenum compounds in a light grease base) and great shear resistance. It is superb on action parts, and works fairly well on slide rails - as long as you don't mind black stains. Yuck! It does exhibit poor oxidation characteristics and reversibility; though I have no hard data, I suspect it also doesn't resist water or pH changes all that well. For internal parts, which are protected by housings, it is terrific and gives actions a unique 'buttery' feel. I use a lot of it to lubricate sears and rebound slides, but for all other needs there is a much better choice.
For such things as autoloader slides and rifle bolts, Lubriplate "SFL" NLGI #0 grease is my choice. In my testing it's proven itself superior as a general lubricant. It is white, aluminum-based, low odor, has superb boundary lubricants, and is designed specifically for use in environments that encounter a huge temperature range. It's also resistant to water washout and acid/alkali environments, has great shear resistance, and doesn't oxidize like lithium greases will. As an all-around grease I've found nothing better. It's available from
Lubriplate, in their online store. It comes in a 14oz can which will last you for years - no matter how many guns you have!
(Lubriplate also makes SFL in heavier grades, such as NLGI #1. While thicker than the #0, it is still a pretty light grease, and would be my recommendation for very hot climates. The NLGI #0 is a better choice for most of the United States.)
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