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Old February 17th, 2012, 16:08   #3
Stealth
Mr. Silencer
 
Join Date: Dec 2001
Location: Toronto
I speculate that KJW valves are higher-flowing than TM valves to support the increased mass of the metal slide. Higher flow = more gas consumption = more rapid mag cooldown. Couple all this with the inferior design of KJW mags, and you have a less than ideal situation.
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