Fortis Lightweight Enhanced Castle Nut End Plate Kit for AR-15 – K2 System, Black (LE-BLK-K2-BLK)

• Castle nut and end plate system for AR platform buffer tube installation
• Lightweight design weighs approximately 0.55 ounces minimizing added firearm mass
• Constructed from 7075 T6 aircraft grade aluminum for durability and strength
• Quick detach socket features 360 degree rotational locking interface for sling attachment
• K2 system uses locking mechanism to prevent castle nut loosening during operation
• Black anodized finish enhances corrosion resistance and matches common firearm components

The Fortis Manufacturing, Inc. Lightweight Enhanced Castle Nut and End Plate is an AR-15 castle nut and end plate kit designed for securing the buffer tube assembly on rifle platforms.

The Fortis Manufacturing, Inc. Lightweight Enhanced Castle Nut and End Plate kit is constructed from 7075-T6 aircraft grade aluminum and features a black anodized finish. This AR-15 castle nut and end plate kit weighs approximately 0.55 ounces and includes the K2 locking system interface. It incorporates a 360 degree rotational quick detach socket and does not require set screws or a ratcheting system. This product is used for securing the receiver extension while providing sling attachment capability. In standard configurations, this AR-15 castle nut and end plate kit installs onto mil-spec buffer tube assemblies and maintains proper alignment during use.