Glock G45 Gen5 9mm vs Glock G47 Gen5 MOS 9mm

Both pistols hold 17+1 of 9mm on the same frame dimensions: 5.47" tall, 1.34" wide, with the same 5.8 lb trigger pull, the same three magazines and the same Black nDLC finish. What separates them is slide length and the optic cut. The Glock G47 Gen5 MOS 9mm runs a 4.49" barrel against the Glock G45 Gen5 9mm's 4.02", which makes it 0.51" longer overall (7.95" vs 7.44"), 1.45 oz heavier (25.93 oz vs 24.48 oz) and 0.63" longer between the sights (6.65" vs 6.02"). The G47 is optic-ready; the G45 in this configuration is not.

Pick the Glock G45 Gen5 if:

• You want the shorter 7.44" slide while keeping the full 17+1 capacity
• You carry all day and 1.45 oz matters (24.48 oz vs 25.93 oz)
• You shoot irons only, so a factory optic cut is not something you need to pay for

Pick the Glock G47 Gen5 MOS if:

• You want a factory optic cut instead of sending a slide out to be milled
• The 0.63" longer sight radius (6.65" vs 6.02") helps your iron-sight shooting
• You prefer the white dot front and white outline square-notch rear to the G45's plain fixed sights

Frame size, grip, capacity and trigger weight are identical, so this is a slide decision. It comes down to whether 0.51" of length and 1.45 oz are worth a factory optic cut and a longer sight radius.