And so it begins...

[Jordan]

Is the factory HPR that bad? What is the normal pressure range for one of these things? Is gutting the regulator a.reversible process (i.e. the internals could be reinstalled should their be need/want)

I am trying to keep this thing as factory as possible, even if peak performance cannot be achieved. I appreciate any help/suggestions. I had two of these way back. One was bone stock and the other had been modded when i purchased it. So I am familiar with them to a point but never did much to this platform personally.

In short, yes, it's that bad.

Depending on internal mods they generally run at 400-500psi... gutting the reg is reversible, depending on how it's done.

It's not really a "peak performance" thing, I've heard of and seen 30-40 fps swings with a stock HPR setup. It makes them much nicer to use. You can leave the LPR alone assuming the piston and reg seat are still ok, they're usually adequate unless you're trying to push the cyclic speed up.

The other crucial thing is the anti-friction mods to the hammer and carrier assemblies.

[ghilliesuit]

There are a few mods that are generally considered to be necessary, and I would suggest gutting at least the HPR assembly and run an aftermarket reg.

Is the factory HPR that bad? What is the normal pressure range for one of these things? Is gutting the regulator a.reversible process (i.e. the internals could be reinstalled should their be need/want)?

I am trying to keep this thing as factory as possible, even if peak performance cannot be achieved. I appreciate any help/suggestions. I had two of these way back. One was bone stock and the other had been modded when i purchased it. So I am familiar with them to a point but never did much to this platform personally.

[Jordan]

You wouldn't happen to have a list of O-rings would you? Probably not, but worth asking haha

Edit: Yes, it looks to be all there and in pretty damn good shape. I need some LP hose, a braided line, some fittings. My plan is to return this one to a functional stock - no modifications unless required to get it going. May freak bore the barrel. I want to take this thing in all its turn of the century goodness.

There are a few mods that are generally considered to be necessary, and I would suggest gutting at least the HPR assembly and run an aftermarket reg.

[Dragunov151]

This looks familiar .

[ghilliesuit]

Sweet!!! Looks like a good start!

You wouldn't happen to have a list of O-rings would you? Probably not, but worth asking haha

Edit: Yes, it looks to be all there and in pretty damn good shape. I need some LP hose, a braided line, some fittings. My plan is to return this one to a functional stock - no modifications unless required to get it going. May freak bore the barrel. I want to take this thing in all its turn of the century goodness.

[Rainmaker]

Sweet!!! Looks like a good start!

[ghilliesuit]

Took this thing apart quite a while ago and got stalled out. Everyone stand by for dumb questions.