I just received mine and i must say that i wont buy anymore of them! First they are steel made so they are a little more heavier than the blacks ones(aluminum). They do fit in my CSA VZ 58 and they are tight sideways but they are quite loose from front to back, and you have to push it front way to be able to #### the rifle! Also if the magazine move back the hold open device will fail to work and it is the the same for the bolt release. Out of 3 magazine one just wont work with the bolt release. So overall you are much better to pay 30$ for a functionnal aluminum black one than to pay 20$ for this crapy one! I am surprised that Wolverine supplies sell these because they are badly engineered, they still look good but they obviously don't do the job. I will probably ask for a refund! So stick to the black ones is my advice!...