Thanks Kokanee and Turok_t for the response.
I ended up getting the steel barrel, blowback kit, and the high velocity nozzle.
I do encounter the same problem with Diwasas with the nozzle leg broken off. The stock one that came with the gun broke after couple magazine as well. And the upgraded nozzle broke off , but I didnt realize the legs broke off after shooting about 8 magazines in.Did anyone figured a way to get around this? (sorry if there's already an answer to it, but I am not 100% familiar with parts discussed above.)
thanks,
herb