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Inconsistent Blowback

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#1 Zed8



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Posted 16 March 2011 - 12:34 PM

While technically, this is a KSC M19, I figured that they are so similar internally that the kind folks here could help me out.

When I fire the pistol, some shots result in a weak blowback while others seem to be the full, fast, crisp blowback that I was used to. I found some descriptions of similar problems being caused by a broken rocket valve, but I disassembled my pistol and found the rocket valve to be fully intact (and metal, so...). The pistol always chambers the next round after each shot, regardless of blowback, and the velocity doesn't seem to be too negatively affected.

Are there any other issues that could be affecting this?

70 F
TSD and Bioshot BBs
Propane (with lube added)
Recently stripped and cleaned KSC M19

Any help would be appreciated. I'm going to OP Red Storm this coming weekend and a working pistol would be fantastic.

#2 Spiggy



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Posted 17 March 2011 - 02:30 PM

sorry, no KSC discussion here

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