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short1st · September 19th, 2021, 20:39

Hello guys!

I am trying to disassemble my KJW M4 version 3 bolt in order to install an NPAS to respect field FPS limits.

My issue is that after removing the main bolt pin (part 118 in the imagur image), I can not figure out what to do next to remove the piston from the bolt.

https://imgur.com/a/jPgLLPv

The V2 bolt has another piece which you unscrew to free the piston from the bolt, but the V3 does not have it, and I cannot figure out how to pull the piston out.

Is there some kind of clip that I'd have to push, or some way I'd have to turn the piston, etc, to free it from the bolt?

Any help greatly appreciated!!

September 19th, 2021, 20:39	#1
short1st Trader rating Join Date: Jun 2015	KJW M4 V3 bolt disassembly Hello guys! I am trying to disassemble my KJW M4 version 3 bolt in order to install an NPAS to respect field FPS limits. My issue is that after removing the main bolt pin (part 118 in the imagur image), I can not figure out what to do next to remove the piston from the bolt. https://imgur.com/a/jPgLLPv The V2 bolt has another piece which you unscrew to free the piston from the bolt, but the V3 does not have it, and I cannot figure out how to pull the piston out. Is there some kind of clip that I'd have to push, or some way I'd have to turn the piston, etc, to free it from the bolt? Any help greatly appreciated!!