Fortis Lightweight Enhanced Castle Nut End Plate Kit for AR-15 – K1 System, Black Flat Dark Earth (LE-BLK-K1-FDE)

• Castle nut and end plate combo designed for AR platform buffer tube retention system
• Lightweight design weighs approximately 0.55 ounces for reduced overall firearm weight
• 7075 T6 aircraft grade aluminum construction ensures durability under repeated use conditions
• Quick detach socket features 360 degree rotational locking interface for sling mounting
• K1 tapered locking system prevents castle nut backing out without staking requirement
• Black and flat dark earth anodized finish enhances corrosion resistance and appearance

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 Flat Dark Earth 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 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 consistent alignment during use.