moe handguard

[TheRev]

hi guys dunno wether im being dense but i thought id ask. im getting an magpul moe handguard but was wondering, the handguard uses the ring on the back of the fron sight to hold it on. if i get this:

http://www.zerooneairsoft.com/produc...oducts_id=4078

how would i attach the handguard. cheers guys