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

Both are optics-ready 17+1 Gen5 9mms on the same frame: the Glock G45 Gen5 MOS 9mm and the Glock G47 Gen5 MOS 9mm share a 5.47" height, 1.34" width, a 5.8 lb trigger and three magazines. The difference is the slide. The G47 runs a 4.49" barrel against the G45's 4.02", which makes it 0.51" longer overall (7.95" vs 7.44"), 1.41 oz heavier (25.93 oz vs 24.52 oz) and stretches the sight radius by 0.47" (6.65" vs 6.18"). Sights also differ: the G45 MOS ships with fixed front and rear, while the G47 MOS uses a polymer white-dot front and a white-outline square-notch rear.

Pick the Glock G45 Gen5 MOS if:

• You want the shorter slide for concealment: 7.44" overall, 0.51" less than the G47
• You want the lighter gun at 24.52 oz, 1.41 oz under the G47
• You want the compact-length slide on the full-height grip, which is the whole point of the model

Pick the Glock G47 Gen5 MOS if:

• You want the 4.49" barrel and the longer 6.65" sight radius for irons at distance
• It is primarily a duty or range gun where 1.41 oz of extra weight helps more than it hurts
• You want the white-dot front and white-outline rear sights as issued

Grip height, width, capacity and trigger are identical, so the only thing you are deciding is slide length. Concealment points to the G45 MOS, sight radius and barrel length point to the G47 MOS.