Determining a firearm to opt for can be difficult , especially when looking at the differences between the 19X MOS model , the classic G19, and the fourth gen G19. The 19X introduces a modular optic https://socialmediainuk.com/story27988675/choosing-the-ideal-19x-mos-vs-standard-g19-vs-4th-gen-a-glock-is-right-for-the-shooter