The Fortis K1 Lightweight Enhanced castle nut and end plate (MPN LE-BLK-K1-FDE) uses a tapered self-sealing castle nut design, in FDE.

Key Specifications

• Fortis Lightweight Enhanced (LE) K1 castle nut and end plate system
• FDE end plate finish
• Tapered castle nut seals itself onto the end plate
• No staking, ratcheting, or set screws required
• Weighs only 0.59 oz / 16.8 grams

Frequently Asked Questions

What problem does the K1 system solve?
It prevents the castle nut from ever backing out, without needing to stake the end plate.

How much does this end plate weigh?
0.59 oz (16.8 grams).

Buy the Fortis K1 Enhanced End Plate

Stop your castle nut from backing out with this K1 system from Fortis Manufacturing. Order from a Lubbock, TX gun shop in our AR buffer systems lineup.