What is the size of a 10 round magazine compared to a 15 round Magazine? I have 7 magazines which are 4" in length and was told they were 15 round but I've see others that are the same length and are said to be 10 round. Little help please.
You can take a 15 round magazine and put a plug in it to only hold 10 rounds but it does not meet the 10 round standards of the leftist states that require it unless it is permanently mounted in place and cannot ever be remove. So the ten round magazines are generally going to be 1/3 smaller then the 15 round magazines but a 15 round magazine can be modified to 10.