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Old July 18th, 2009, 19:00   #1
Armalite
 
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Join Date: Dec 2008
Location: Quebec city
Question about M4 hop up

hi,

I want to know if a normal ejection door is OK to protect against sand and dust, my hop up chamber of my M4 if i keep it closed. Is it better to put a metal piece cover over the hop up chamber like on the picture below?


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