I just acquired a Beretta 501 in .308 Win. The 500 series (500 = short, 501 = medium, 502 = long action) was built by Beretta using specially made Sako A-series actions long before Beretta acquired Sako. The actions are round-topped with no dovetails and have only Beretta markings, no Sako markings. They are replete with European proof marks on both action and barrel. The barrel and stock both appear to be from Beretta in Italy, with only the action being Finnish. As with some Sakos from the A-series, this one has a black synthetic magazine follower. But none of the other Berettas from the 500 series I've examined have had this feature. I have seen it in a two other Sakos I've owned, an A-I .223 and an A-V .338. Both were Deluxes. Just wondering: How often do others see the synthetic follower, and have you seen it in other than A-series actions?