Otis Defender Series of Cleaning Kits

Ok, I get it. Cleaning guns is not the most fun you will have related to shooting. In fact, it may be the least fun thing you can do with a gun. Consequently, gun cleaning kits aren’t sexy. However, cleaning supplies – whether you get them in a kit or pieced together on your own – are integral to keeping a gun up and running.

Otis Technologies has a line of kits it was promoting at the SHOT Show called the Defender Series. These kits are designed to be portable cleaning systems in popular military calibers plus .40 caliber.

The kits use a pull through cleaning system that includes the flexible cables, bronze bore brush, slot tip and cleaning patches. Even more importantly, from my view, is a caliber appropriate Ripcord for one pass cleaning. Rifle caliber kits also include chamber brushes and rods.

Five kits are designed around a single caliber. Four others pair two calibers in a single kit. The kit calibers are:

  • 5.56
  • 7.62
  • 9mm
  • .40
  • .45
  • 5.56/7.62
  • 5.56/9mm
  • 5.56/.40
  • 5.56/.45

All of the kits are contained in a heavy nylon pouch that has PALS webbing for attaching to a backpack or other load bearing gear. This could make it a little easier to organize when going into the field.

These kits are all made in the United States. The suggested retail priceĀ on the single caliber kits is $69.99. The two caliber kits is slightly more expensive at $79.99.

One thing that seems to have held true throughout my shooting life is that the farther you are away from your work bench, the more trouble a gun canĀ give you. Having something portable like the Defender kits can be a great help no matter where you are or what you are shooting.

Richard Johnson

An advocate of gun proliferation zones, Richard is a long time shooter, former cop and internet entrepreneur. Among the many places he calls home is http://www.gunsholstersandgear.com/.


  • Grant

    I bought several Otis kits a number of years ago when they first started hyping the fact that the military was issuing them.

    I thought they would be convenient to throw into a range bag for emergency use. It is true that the kits are small, but they are a major PITA to use. They are also very expensive and have lots of little parts that are easily lost and are not retained well by their carrying case.

    I much prefer a compact kit like the Pro-Shot Universal Field kit that has a segmented stainless steel rod. They are much cheaper at around $35 and come in a small hard plastic tube. The kit is small enough to fit in the butt trap of an AR-15, but I just left mine in the tube it came in. It is high enough quality that it would be a fine kit for a beginner to use as their primary cleaning kit, but is small enough it can easily be thrown into a range bag.

    I think a kit containing an actual cleaning rod is a must. It is much easier to remove a stuck case or a bore obstruction than trying to use a floppy cable. If you feel you have to have a pull through cleaning kit for emergencies I would just get a bore snake. They are much cheaper than an Otis kit.

    • Frankie 2 Lunch

      Otis is the only thing I’ve ever used, cleans better than any rod system, has the same amount of parts (maybe +1 for the handle.) Can’t understand how the parts are easier to loose, the gun brush sizes are fairly universal between companies.

      As far as difficult to use, only if you have difficulty reading or understanding English. The kit I bought included a diagram on how to properly size the patch for your caliber.

      If reading isn’t your thing, Otis has a YouTube channel (for now, anyways) that shows how to make the “flower cup” patch shape with their patches.

      Once you learn how it works, you’ll never go back to a cleaning rod (Unless you have a stuck case.)