Fits the ca vska - CAA AK47 Picatinny Handguard Rails System - Complete Set

So it kind of is a pain yo install which is why i gave it a 4 star. You have to ki da slam the bottum U shape thing on the bottom guard in to fit and then you have to fit the upper guard upside down on the gas tube them procese to use a plier and twist it normally cuz the VSKA gas tube has 2 U shape guards one on each sude and they are what actually hold the upper down but you gotta fit it upside down then twist it. Otherwise its a good part, very sturdy and with the quad rail it has it make my AKM look amazing.