Turning the gun 90 degrees so the bottom ejection port
was horizontal or inverting the gun allowed the action to cycle ammunition from the magazine normally.
For instance, if mounted too far forward, the window could cover the ejection port
The SRO is half an inch longer than the RMR, but it has the same footprint and will fit most any setup that takes the RMR--as long as the longer SRO doesn't hang over the ejection port
" Like the little trap door on the ejection port
of an AR-15 also being called--you guessed it--a dust cover.
This device and many to follow simply attaches to the Picatinny rail in front of the AR-15/10 ejection port
and deflects all brass forward or downward, thus, protecting the person beside you from injury.
The receiver has an enlarged ejection port
for easy loading of single rounds and snag-free ejection of fired cases.
It was built on a standard flattop upper receiver with the ejection port
opened up to ensure reliable operation with those fat cases.
The G45 also features front serrations, which are precision-milled forward of the ejection port
on both sides.
It then operated like the Auto-5, except the shell was held to the bolt face by the extractor and flipped out when it hit the ejector, a nub on the side of the receiver wall opposite the ejection port
. We equate this system today primarily with Benelli, but here's the rest of the story.
The bolt release button is in the logical place beneath the ejection port
on the right side of the receiver, just where you'd expect it to be.
Years ago, it seemed that every magazine had pieces on checkering the front strap, modifying the shape of the trigger guard, installing an ambi safety, altering the ejection port
The M240's TM 9-1005-313-23&P (Dec 07) is a bit vague on how to reassemble the ejection port