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Ricky H. asked 6 years ago:
4 answers
Glock 19 Gen5 MOS 9mm nDLC Pistol
No. MOS stands for Modular Optics System. FS means fixed sights. I'm glad I was able to assist you. It was my pleasure.
Rudy G.
6 years ago
Not military. Just means modular optics system
Erasmo P. H.
6 years ago
Modular optics system (red dot sight )
Randy I.
6 years ago
Modular optics system (red dot sight )
Randy I.
6 years ago
