Quality
I ordered my magazines with the standard slide stop follower. And thought for $130 dollars these have to be as good as the Staccatos. I was wrong. The followers look 3D printed, they're rough and uneven finish prevents them from protruding properly to engage the slide stop. Once I sanded them smooth it still only partially engages. The feed lips will also need to be adjusted. The poor quality molding on the follower causes the spring to be off centered in the follower causing it to tip forward, I've had this issue in my 10mm magazines as well as my .45 mags. Stupid of me to by from them twice. I'll be purchasing STI components to hopefully get them working. Do yourself a favor, save some money and buy something of quality like Staccato. Unless you like working on your mags and spending twice the money