[Painthappy]

Yup.. RVA's (Rear Velocity Adjusters) are aftermarket pieces... I still have some new in the bags.

The valves were never meant to be taken apart. If it's broken, then you need a new one. There are plenty of those floating around, or find another beater SMG that cosmetically stinks, but the internals are fine usually.

As for the "jungle clip", it's a plastic piece, and if you don't have it, then it broke. Very very few survived, I only know of a few people that own some, and I'm one of them since I was / still am, and SMG fanatic.