Matrix 27 Round Magazine for 1911 Gas Blowback Airsoft Pistols

"Matrix R27, 1911 magazine.
I have had these for about 4 months now and the basic operation of them seems to be holding up.
The only issue I had was that the follower that pushes up on the slide catch doesn't stick out far enough and the plastic part next to it blocks it from the catch.
I had to shave that side down to allow it to work properly. Just be careful not to shave too much, it's thinner than it looks.
Compared to my stock Cybergun Colt single stack magazine, it appears that the plastic tops are nearly identical except for the side with the follower which is flat instead of round.
I plan on ordering more because they are so much cheaper than all the others and the issue is remediable.
Other wise they get a 5 star for value and over all performance