Quote:
Originally Posted by turok_t
Ive tried and owned both the open and closed both system for the WE M4. When the gun fires, sometimes gas is discharged from the ejection port. This reduces the gas efficiency and I hate to waste gas, especially when more is needed to cycle a steel bolt. Any remedies for this issue?
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Isn't it part of the design?
The valve in the bolt directs some of the gas out the front of the bolt to fire the bb. The remaining gas gets directed out the back of the bolt and into the bolt carrier - and eventually out the ejection port.
Based on this, gas will always be discharged from the ejection port. Whether you see it or not will depend on temp, humidity, amount of oil in your mag.