This is a Handguard I designed for a friend's Cyma AK74u, so a micro T1 (or similar) red dot can be mounted.
The use of supports is strongly recommended, as the inner curvature needs to be accurate for a good fitting with the metallic frame.
If you make one, please post a picture of your airsoft gun!
PD: This is a high-profile version. If a low-profile fits better with your aiming style, check the "low-profile" version of this in my profile.