This kit is a tactical metal top rail system for those who want to add a rail system to their AK-47 AEGS to mount more equipment. This also has a handguard with tri-rail for attaching furthermore. This costs US$23.49 at RSOV.com. Not that an expensive an ACM product if you want to turn your AK-47 airsoft gun into a transformer. Sorry, just my imagination getting into wacky areas.

By the way, A.C.M. AK47 tactical metal top rail system handguard is made of Polymer.