• SUB-2000 Collar Adhesive - Loctite 380 "Black Max"
  • Recommended KEL TEC Factory Adhesive for SUB-2000 Collar
  • Material Compatibility: Metal, Plastic, Rubber
  • Instant Adhesive
  • Loctite 380 Spec Sheet

SUB-2000 Collar Adhesive - Loctite 380 "Black Max"

The Loctite 380 "Black Max" is a black, cyanoacrylate adhesive that comes in a 3g tube. This is what KEL TEC uses from the factory to secure the Collar to the back of the SUB-2000. 

You really need a strong adhesive like the Loctite 380 "Black Max" to bond the aluminum collar to the plastic trigger assembly since there are no threads for the collar to tighten up against on the firearm. This low viscosity, durable adhesive is great for a variety of applications, including bonding metal, rubber and plastic.

Loctite 380 "Black Max" Features:

  • Brand: Black Max®
  • Series: 380
  • Product Type: Instant Adhesive
  • Material Compatibility: Metal, Plastic, Rubber
  • Color: Black
  • Primary Color: Black
  • Physical Form: Liquid
  • Cure Time: 24h
  • Viscosity Measurement: 100 to 800mPa/s
  • Chemical Composition: Ethyl 2-Cyanoacrylate, Carbon Black, Hydroquinone
  • Specific Gravity: 1.1
  • VOCs Content: <20g/L
  • Odor: Irritating
  • Maximum Operating Temperature: +225°F
  • Minimum Operating Temperature: -65°F
  • Container Capacity: 3g
  • Container Type: Tube
  • Applications: Bonding

Loctite 380 Spec Sheet

Overall Customer Rating of 8 Reviews:

Loctite 380

Bought this due to having my buffer collar nut come loose on me after shooting a few magazines. Figured I didn't add enough. Now hopefully it will stay in place. Glad MCARBO has this in stock because everywhere else has it for so much more in price.

Rogersville TN.


What can you say it WORKS


A must have for installing your Castle Nut

This stuff is like the Hen's Teeth of Locktite. Good luck finding it anywhere else on the planet at this price. Even Amazon failed me.

You really have got to have this to reinstall your Castle Nut the right way. This is a special Polymer to Metal superglue basically. Works wonderfully. Like Chris says in his video, be careful you don't slop it around. You will not get it clean.


Buy this if you're replacing any internal parts

You'll need this specific glue (per Kel-Tec) if you open the firearm for any reason, like cleaning or upgrades. It's cheaper here than it is on Amazon, and I couldn't find it at any local home improvement or hardware stores.

Tucson, AZ

Use the right stuff.

If you take your Sub 2000 apart to do so internal work, you will need this to put the weapon back together so it is in a safe working condition. Good price and follow the directions and it will go a long way. Store it in a cool place and the shelf life will be good.

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