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Old May 9th, 2012, 10:30   #19
Stealth
Mr. Silencer
 
Join Date: Dec 2001
Location: Toronto
The Z-hop kits are dead easy to use and requires VERY little tuning.

I've had success pairing them (ZIR kit) with SHS or Lonex hop rubbers on my scratch-built G&P M4s.

Last edited by Stealth; May 9th, 2012 at 10:45..
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