Question: are glock 17 and 22 mags interchangeable?
Answer: The Glock 17, 22, 31 and 37 all share the same magazine dimensions. So, your Glock 17 and 22 magazine will fit/lock in a... Glock 17, 17L, 18, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38 & 39. However, unless you do a caliber conversion, it will not work in all of the above Glock models.