Maybe not critical, but its good to have that working. I load and reload by pressing down the slide lock; it feels more reliable and positive than sling shotting the slide. So having the slide lock back when empty is nice. BTW, none of my mags have that round spring loaded thingy. Must be something new.
Rest in peace Muggsy
"Individual Muslims may show splendid qualities, but the influence of the religion paralyses the social development of those who follow it. No stronger retrograde force exists in the world." Winston Churchill 1899