i just tried taking pics. the lighting in my house sucks. it is like a fucking dungeon. i'll get some pics up tomorrow.
the follower on the 18rnd is shorter in height than the stock 15
the shape of the top of the mag 18er is different as well
the follower/spring assembly is a different shape too
stock 15er mag, 18rnd mec-gar follower/spring assembly = 17
stock 15er mag, +2 base pad and mec-gar 18rnd follower/assembly = 20
stock 15er mag, stock 15er follower/spring and the +2 base = 18
just buy the mec-gar 20rnd for $30! lol