I just bought a used PM40 yesterday that was made in 2006. It still has the plastic mag catch and old style recoil assembly. I shot it using the 6rd extended mag and it ran flawlessly. I was surprised and pleased because the extended mags are known to cause feeding problems as well as the plastic mag catch. Having Mepros pre-installed by prior owner before purchase, well it don't get any better than that. As far as accuracy goes, it was on the money. The con concerning my recent acquisition is that my PM40 didn't come with any 5rd mags and none of the local shops have any in stock. Oh the most important part, recoil is there but it is in no way shape or form brutal!!