WE M4 Closed Bolt NPAS help.
 

So I've likely missed something, but here it goes. Recently I came into ownership of my first GBB a WE Hk416. She came with a fair bit of upgraded internals including an NPAS already installed. Now looking over the gun I love it, but am wondering at how to adjust the NPAS for different FPS. I looked over a few vids and nothing seems to pretane to this NPAS and even though I doubt the SCAR version adjusts differently I want to be sure. How do I adjust my WE HK416's NPAS?

you need a specific key that should have been included with it. It looks like an inverse allen key. You need to hold onto the smaller o-ringed bit that is inside the outer nozzle, and turn the key to tighten (and thus lower the FPS), or untighten (and thus heigthen the FPS) to desired FPS.

http://img.photobucket.com/albums/v2...talon/npas.jpg

Hmm the rifle never came with this key. I assume there is no way aquire one short of buying a new NPAS? Also if that is true Anyone know it the OB npas key works with the CB one?

It's the same

Sent from my HTC-Z710a using Tapatalk 2

Perfect. The OB NPAS is allot cheaper, and I'm planning on switching over to OB at the end of the season anyways.

RLY? the same?

Ive got like 3 CB BCG's sitting around, and I was desperate to find an OB npas...

The open chamber and closed bolt npas are 100% different. They are not interchangable. The tool to adjust is though. Try Jugglez, I think he sells spare tools.

Rly? I just ripped apart both systems... kinda stumped how to split the OB nozzle to get the valve out...


Edit, he is 100% correct. They are not compatible.

Yea we was taking about the tool used to adjust the NPAS, not the NPAS' themselves.