Before Dirk goes there, no. Not those lubricants. This is Part 2 to follow Part 1 of our review on KG Chemicals. Part 1 dealt with KG’s cleaners while this review will deal exclusively with their lubricants. All ratings below are subjective and based on a 5-star scale and include a link to Midway.com embedded in the price . . .
The Claim: KG-4 Gun Oil meets the stringent requirements set forth in the original Military Specification Mil-L-63460 D. It is a blend of the finest lubricants available and contains no synthetics. With very low surface tension, KG-4 exhibits excellent lubrication and provides outstanding corrosion protection. KG-4 has the added property of keeping current firing residue in suspension which allows for easier cleaning. KG-4 has been field tested for endurance using 50 caliber machine guns. Initially the 50’s were experiencing stoppages at 750 to 1000 rounds. After using KG-4 (CLP2) the guns were fired and stopped at 6000 rounds due to heat and to clean the weapons.
I normally use Sil-Glyde for the internals of all my guns because its a high temp grease that stays put and cleans up very easily. I’ve stayed away from other oils because they seem to evaporate to some degree and leave a sticky mess behind. KG-4 has reached equal status in my eyes. My carry pistol still gets Sil-Glyde because I hate having oil seepage all over my grips. However, my AR platform, Garand, and bolt guns are now sporting KG-4. It seems to penetrate well, and provide good coverage for metal on metal contact. I’d say that cleanup is ever so slightly easier after using KG-4, but heavily carboned areas like DI bolts still need some scrubbing. Also keep in mind that a “wet” AR upper will have some burnoff and spray for the first few rounds. A nice bonus is the nozzle on the bottle which allows you to get in tight nooks and crannies without spilling oil everywhere.
The Claim: KG-5 Trigger Lube is formulated specifically for trigger mechanisms. It is a blend of the finest lubricants available, including P.T.F.E. KG-5 provides excellent lubrication and corrosion protection. KG-5 will keep trigger pulls even and smooth and has been field tested by Military and Police personnel, and has proven itself to be a superior product.
Trigger mechanisms are so much harder to lube than anything else because you do need a true penetrating oil. The problem is that most penetrating oils like WD 40 need to have a solvent that evaporates. The solvent keeps things thin to get into tight places, and then evaporates leaving behind the oily residue. Usually, this results in a gummy, crappy trigger pull. Conversely, a thicker oil like KG-4 might be too viscous to get into the tiny nooks and crannies of a trigger mechanism. KG-5 seems to be a lighter weight version of KG-4 that doesn’t gain or lose viscosity when exposed to air. I’ve found that after a thorough cleaning, it does seems to help trigger smoothness. It is not a miracle drug, so don’t planning on spending $6.00 to make your milspec trigger less crappy.
The Claim: By incorporating our new micro technology P.T.F.E. and a combination of fine silicone lubricants in a fully suspended formulation, KG Industries has developed one of the finest leather lubricants on the market today. The lower friction coefficient of KG-9, once burnished into the leather, will dramatically reduce the leather wear on your firearm or knife finish.
KG-9 seems to be a lighter version of Mink Oil which I’ve used for years on my leather boots and gloves. The thing that’s kept me from using Mink Oil on my holsters is that it aways seems to leave a bit of “stick” behind. KG-9 doesn’t have those same issues as it seems to make good use of some solvents that evaporate after 10-15 minutes leaving behind a well lubricated leather surface. I’m not so high speed, low drag that I can reliably tell you that my draw is faster after using KG-9. What I can tell you is that it didn’t discolor my leather holster, it did seem to make it slicker, and (as a bonus) it left my hands delightfully soft.
The Claim: KG-10 Moly Dry film Lubricant is a highly effective MOS2 multi-purpose lubricant which greatly reduces friction and wear. KG-10 goes on wet, penetrates into the metal, drys leaving a pure Moly dry film that will protect and lubricate without attracting dirt or dust. Use KG-10 Dry Lube where a dry no-mess lubricant is required i.e. Triggers, slides, etc…
KG-10 was far and away the most “fun” lubricant as it is a dry lube suspended in a solvent that smells quite a bit like acetone. I had good luck using it in the actions of my knives, and while all my guns ran reliably using KG-10, I feel safer with wet lube vs a dry film. If you’ll be running your guns is a very dusty, dry environment, this might just be the ticket. I’d also give it a whirl for magazine lubrication if you feel your mags need it.
The Claim: KG’s New Moly Grease is based on the formulation of our KG-4 Gun Oil and Technical Fine Grade Molybdenum disulfide powder. The result of blending these two fine products produced a grease which will provide a lubricant that will reduce wear and prevent seizure of dissimilar metals and other alloys in sliding motion parts. KG-11 Moly Grease is appropriate for use, but is not limited to many applications in the Automotive, Motorcycle and Firearms Industries. Most impressive is the amount of pressure KG-11 will bear and holding true to our products being limited to only your imagination, KG-11 Moly Grease can also be used as an anti-seize compound for threads of steel nuts and bolts in heavy industries.
I had high hopes for KG-11 as I’m a grease man. However, I had multiple failures to load while using this grease in my AR-15. Keep in mind, I’ve only ever had primer related failures with this AR. Once I cleaned my BCG, and lubricated using KG-4, I was back in action. The other major problem which has been noted in online reviews is the propensity for KG-11 to separate. My jar was most definitively separated upon delivery and took about 5 minutes of vigorous stirring to get back in tip top shape. That honestly sucks and took this from a 5 star review to 3. This grease is quite nice for assembly and once applied is nearly impossible to remove. I advise that you wear gloves or your hands will be stained for days.