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

• Castle nut and end plate combo for AR buffer tube retention assemblies
• Lightweight construction weighs approximately 0.55 ounces reducing overall system weight
• 7075 T6 aircraft grade aluminum ensures durability under repeated firing conditions
• Quick detach socket provides 360 degree rotational locking interface for sling mounting
• K2 locking system prevents backing out without need for staking or set screws
• Black and flat dark earth anodized finish offers corrosion resistance and visual appeal

The Fortis Manufacturing, Inc. Light Weight K2 Castle Nut and End Plate is a castle nut and end plate kit designed for securing an AR-15 buffer tube assembly. This castle nut and end plate kit uses a lightweight construction with a combined weight of approximately 0.55 oz and incorporates a 360-degree quick detach socket interface for sling attachment.

The Fortis Manufacturing, Inc. Light Weight K2 Castle Nut and End Plate features 7075 T6 aircraft grade aluminum construction with an anodized black and flat dark earth finish. The K2 system utilizes a locking interface that engages between the end plate and castle nut without set screws or ratcheting components. This product is used for AR-15 platform builds requiring a secure receiver extension interface. In standard configurations, the castle nut and end plate kit provides a reusable installation method without staking. The Fortis Manufacturing, Inc. Light Weight K2 Castle Nut and End Plate includes a 360-degree rotational QD socket and is manufactured in the USA for consistent material specification and fit.