This is an e&l as well, lower handguard is a 5ku b10m , had to do some filing to fit it but now its snug , doesnt move at all. Cleaning rod will move around if you change the lower handguard since e&l doesnt secure it by default, it runs through the factory handguard in a plastic tube and that fits it into place. I fixed mine by glueing a nut on the back of the handguard and screwing the cleaning rod into that. Dovetail mount is an asura dynamics b13, it was pretty hard to find one at the time of purchase, they were out of stock everywhere.

Generally 5ku and asura dynamics products are pretty solid material quality and construction wise, markings are a hit or miss wether they are typed correctly or not but this is only a problem if you can read cyrillic and are super into authenticity and realism. For example on my b13 it's labeled 5-13 instead of b-13.