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Old January 8th, 2010, 17:36   #9
colonel_kipper
 
Join Date: Nov 2005
Location: London, England
Actually, now that I think of it, the '416 was running a ported cylinder and I used the stock full (unported) cylinder which came with the Pro-Win, even though I'm using a Systema MC51 6.04mm barrel (285mm) in a 10.5" upper.

Update : Pictures!

Sector gear damage



Piston teeth damage





Here is another interesting area of damage - the cylinder has been struck by something (I hope not the sector teeth) and deformed - Should it be replaced, and how can I avoid this. Do you think it might have been caused by incorrect disassembly, or not releasing the anti-reversal latch before separating the upper from the lower?





Thanks!

Last edited by colonel_kipper; January 8th, 2010 at 19:25..
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