Fortis Lightweight Enhanced Castle Nut End Plate Kit for AR-15 – K1 System, Black Gray (LE-BLK-K1-GRY)

• Castle nut and end plate system designed for AR style buffer tube assemblies
• Lightweight construction weighs approximately 0.55 ounces minimizing added firearm weight
• 7075 T6 aircraft grade aluminum provides strength and long term durability performance
• Quick detach socket supports 360 degree rotational sling mounting interface capability
• K1 tapered design eliminates need for staking and prevents loosening during operation
• Black and gray anodized finish improves corrosion resistance and visual customization

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 an anodized black and gray finish. This AR-15 castle nut and end plate kit weighs approximately 0.55 ounces and includes a K1 tapered locking 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 receiver extensions while allowing sling attachment. In standard configurations, this AR-15 castle nut and end plate kit installs onto mil-spec buffer tube assemblies and maintains consistent positioning during use.