Glock G22 Gen5 .40 S&W vs Glock G27 Gen5 .40 S&W

These are the same .40 S&W striker-fired design in two sizes, with the same 5.8 lb trigger, the same fixed white dot front and white outline rear sights, the same interchangeable backstraps and three magazines each. The Glock G22 Gen5 .40 S&W carries 15+1 against the Glock G27 Gen5 .40 S&W's 9+1, and it is bigger in every dimension: 1.53" longer (7.95" vs 6.42"), 1.30" taller (5.51" vs 4.21") and 4.58 oz heavier (28.43 oz vs 23.85 oz). Neither is optic-ready. MSRP runs against size here: $539 for the G22, $647 for the G27.

Pick the Glock G22 Gen5 if:

• You want six more rounds on board (15+1 vs 9+1)
• You want the 28.43 oz weight and 4.49" barrel working for you in .40, rather than 23.85 oz and 3.43"
• The 6.42" sight radius vs 5.35" helps you at distance, and the lower $539 MSRP vs $647 helps at the counter

Pick the Glock G27 Gen5 if:

• Concealment is the whole point: 6.42" long and 4.21" tall against 7.95" and 5.51"
• You want 4.58 oz off the belt (23.85 oz vs 28.43 oz)
• You still want the same 5.8 lb trigger and the same backstrap fit in the smaller gun

The trigger, sights and controls are the same, so the choice is entirely size against capacity: six rounds, 1.53" of length and 4.58 oz, with the smaller gun carrying the higher MSRP.