Glock 17 Gen 5 MOS RMR Optic Install Vortex Viper

############################# Video Source: www.youtube.com/watch?v=-Q2cilUUP88

The new Glock 17 Gen 5 MOS in 9mm. What's in the box? What RMRs will mount to the Glock 17 Gen 5 MOS? How do you mount your RMR to the Glock 17 Gen 5 MOS? Ar...

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