The Castle Nut To End All Castle Nuts!

When designing their new Lightweight Enhanced Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a solution to install the castle nut onto the end plate that is not only robust, but also stands true to their brand of innovation and ingenuity. The K1 system features a tapered castle nut that seals itself onto the end plate. This ultra precision snug fit allows the castle nut to seat and seal itself into place without the need of staking the end plate. No ratcheting, no set screws, no backing out and no failures. All of these features at only .53 oz / 15 grams!

Fortis K2 Specifications and Features:

• Manufacture# LE-BLK-K2-BLK
• Color Black
• Works with all Standard AR-15 Lowers
• Weight .53
• 7075 T6 Aircraft Grade Aluminum
• No Set Screws or Ratcheting Systems That Can't Be Reused
• Made in USA