Fortis MFG LE AR15 End Plate & K1 Castle Nut

The K1 system features a tapered castle nut that seals itself onto the end plate. This ultra precision snug fit allows the castle nut to seat and seal itself into place without the need of staking the end plate. No ratcheting, no set screws, no backing out and no failures. All of these features at only .59 oz / 16.8 grams! Features: Lightweight design at only .59 oz / 16.8 grams total Castle nut is offered in 7075 T6 Aircraft Grade Aluminum Quick Detach Socket - 360deg rotational locking interface No set screws or ratcheting system Made in the USA