

Product Description
The Fortis Lightweight Enhanced (LE) Castle Nut & End Plate System (K2) is engineered to help keep your AR-style receiver extension properly secured while reducing weight and eliminating common failure points found in ratcheting or set-screw designs. Manufactured from precision-machined 7075-T6 aircraft-grade aluminum, this system is built for durability without unnecessary bulk. It also integrates a Quick Detach (QD) socket with a 360° rotational locking interface for sling setup flexibility. Designed and made in the USA, the LE K2 system delivers a robust, streamlined upgrade for builders who want reliable retention without traditional staking.
Product Highlights
- Lightweight LE system designed to help prevent castle nut loosening during hard use
- 7075-T6 aircraft-grade aluminum castle nut and end plate for strength with minimal weight
- Integrated QD sling socket with 360° rotational locking interface
- No set screws or ratcheting mechanisms for a clean, reusable installation
- Made in the USA
Specs
- Brand: Fortis Manufacturing, Inc.
- Manufacturer Part Number: LE-BLK-K2-FDE
- UPC: 850015927140
- Product Type: Castle nut & end plate system (K2 locking system)
- Material: 7075-T6 aircraft-grade aluminum
- Finish: Anodized
- Weight: 0.55 oz / 16.8 g (approx.)
- QD Socket: 360° rotational locking interface
- Country of Manufacture: USA
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