i dont like the adjustable screws and the price, the ruger bx25 is not illegal in canada but should be pinned to 10 rounds as its advertised for the sr22 pistol, and all handgun pistols are pinned to 10 in canada. I use buttler creek steel lips, but ive had problems and after looking at the dimensions of the stock ruger 10 round steel liped mag compared to the buttler creek, the buttler creek is actually higher and i noticed after using it thru 1000 rounds in my sr22r that the metal lips had a grove shaved off. So i decided to take a metal file and file down about 1mm and round out the edge like the stock ruger mag. i have 4 mags and they are ####ing awesome now gtw ready.