5KU RMR Adapter & Front Sight Set for AAP-01 GBB Airsoft

This RMR adapter is amazing! Also the fiber optic rods are of good quality.

But a little tip: if you want you use it for the 01C model, you'll have to file down a bit of either the AAP-01C upper rails or a bit of the RMR adapter; because this adapter is a little bit too long for the 01C model and touches the upper rails of the 01C upper receiver. It's not a problem, I just wanted to let you know, if you want to use it on the 01C :)

These sights fit well and are very useful!