Glock 19 vs 17 magazine July 8, 2019 16 32 64 128 Glock 19 17 magazine Glock 19 17 magazine adapter Glock 19 17 magazine extension Glock 17 vs 19 magazine size Glock 17 vs 19 extended magazine Gun glock 17 vs 19 Glock 19 or 17 Glock 17 magazine