Wild West Gun Shop

OTIS Mission Critical Grease & Lubricant


In stock


OTIS Mission Critical Grease & Lubricant

As a unique mix of aerospace-industry lubricants that was formulated specifically for firearms, MC-10 delivers unrelenting protection from -65 all the way up to 650 degrees. It doesn’t look or feel like other formulas—and it doesn’t break down like other formulas when things get heated. When the mission is critical, MC-10 delivers without compromise.

This combo package includes a 1 fl. oz. spray bottle of MC-10 high performance synthetic lubricant as well as a MC-10 high performance synthetic grease contained in a 3mL precision applicator pen brush. These formulas deliver the ultimate in friction protection and won’t freeze, burn or carbonize – even in extreme temperatures. The grease pen delivers ultimate control to apply in precise areas such as the actions, triggers & slides.

Also includes microfiber gun cloth.


  • MC-10 delivers extreme protection from -65 to 650 degrees
  • Will not freeze, burn or carbonize
  • Safe for all surfaces, including metals, plastics, rubbers and woods
  • Treated molecules hold to metal, unlike other lubricants
  • Odor-free, for worry-free indoor application
  • Microfiber cloth included



  1. Make sure your gun is unloaded.
  2. Remove all oils and solvents with a firearm cleaner, like Shooter’s Choice Quick Scrub.
  3. Spray the MC-10 Lubricant onto the inner workings of your firearm to leave a thin layer.
  4. Work your firearm to help the lubricant penetrate hard-to-reach places. (You might feel some friction the first few times you shoot, as MC-10 will push debris from deep within your gun’s metal.)
  5. When needed, use solvent to remove built-up carbon, fouling and debris.
  6. Reapply MC-10 Lubricant.


  1. Click the yellow precision push button to control grease amount.
  2. Apply to high friction areas, such as actions, triggers and slides for the ultimate protection.


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Ready to purchase firearms online?

With the new CFO changes as of May 18, 2022, the new requirements to purchase a Non-Restricted Firearm online include:

  • We need a photo of the front and back of your PAL
  • Photo of the front and back of your Driver’s License or Government Issued Photo ID
  • Ensure you are using the email address that is on file with the CFP

We have added image upload fields to the order form to send your pictures. You can also attach them to your account or email them to us at [email protected].