PG4030103MOS View cart “Glock G40 Gen4 MOS 10mm, 6″ Barrel, Adjustable Sights, Modular Optic System, 15rd Mag” has been added to your cart. Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sale! IN STOCKGlock G40 Gen4 MOS 10mm, 6″ Barrel, Adjustable Sights, Modular Optic System, 15rd Mag $700.00 Original price was: $700.00.$630.00Current price is: $630.00. Add to cart