Top Rail Kit for Cyma CM030 Electric Pistol Top Rail Kit for Cyma CM030 . Made in Full metal, 14mm thread in the front. Top Rail Kit for Cyma CM030 . Made in Full metal, 14mm thread in the front. Top Rail Kit for Cyma CM030 . Made in Full metal, 14mm thread in the front. Top Rail Kit for Cyma CM030 . Made in Full metal, 14mm thread in the front. Top Rail Kit for Cyma CM030 . Made in Full metal, 14mm thread in the front.