GHK AKMSU Using Handguard RIS for AEG, CYMA Handguard Ris.

Now i'' explain how to modify Cyma Handuard Ris Ak 74u and install to GHK AKMSU gbbr.



- You need to sanding these 4 areas so it can clam the outer barrel and lower handguar can slide in smoothly but not to loosen. I'll call this CLAMP.

So it can clamp outer barel something like this:

Warning: You need to do this several time, do trial, don't over do.
Note: I think you can to decrease diameter of outer barrel so it will be plug and play. But i prefer this way.

- Now try to slide in lower ris, don't tight clamp's bolt yet, so it still can move and you can adjust bolt hole in ris to hole in clamp. Then you can insert upper ris

- you can tight the upper ris by using this two small bolt

- Now you adjust ris so it have perfect line

Then you insert and tigthen all 5 bolts. That's it