Interchangle Parts KSC Glock vs KSC M4 Gbbr : Rocket Valve

Again this is based on some webstore said that rocket valve from action are compatible for ksc glock 17, ksc m4 and usp.
Now i have both parts to compare. Please see below pictures


Action Aluminum  for KSC M4 GBB (right) and original KSC Rocket Valve for Glock series (left), it has almost has same height

Identical diameter

So it's safe to say that both rocket valve are compatible for KSC M4, All KSC Glock Series and KSC USP.
Action product cost you around 7-8 dollar, while stock parts from KSC prices $6.