Hi, i recently purchased a used west german police issue sig p6 I have totally fallen in love with this gun..... unfortunately accessories are kinda hard to come by..... I've been told not to buy the promag magazines cuz they don't load properly. is there an alternative to the pricey factory mags? and can anyone recommend a good concealing holster? and night sights. p.s. this p6 is soooo accurate and comfortable to shoot!