Works on a vska, if you are willing to modify - AIM Sports Inc AK KeyMod Russian Handguard

I bought the long one and it fits fine, but you have to tweak a few things. 1st you have to cut the sling loop off the gas block. The wedge was extremely tight, but will go in. i had to grind out the barrel block a little to fit around the larger diameter barrel that century uses on the VSKA, and you have to cut a grove in the barrel block for the gas tube to seat correctly, but it looks great after just a few modifications.