Glock G17 Gen5 9mm vs Sig Sauer P365 XL 9mm

These are different roles: the Glock G17 Gen5 is a full-size duty pistol and the Sig P365 XL is a compact concealment piece. The G17 carries five more rounds (17+1 vs 12+1), runs a barrel 0.79" longer, sits 1.35" longer overall, and adds 4.17 oz on the belt. The P365 XL counters with a factory optic cut, a slim 1.1" frame for inside-the-waistband carry, and a 0.67" shorter grip that conceals under a tucked shirt where the G17 will print.

Pick the Glock G17 Gen5 if:

• You want 17+1 rounds for duty, home defense, or competition — five more than the P365 XL
• You want a 4.49" barrel and 6.5" sight radius for better recoil control and longer aim radius
• You want the largest aftermarket of any pistol — G17 magazines and holsters are stocked everywhere

Pick the Sig Sauer P365 XL if:

• You want a slim 1.1" frame and 4.17 oz less weight for inside-the-waistband carry
• You want a factory optic cut without buying an MOS variant
• You want a serialized modular FCU that swaps between P365 X, XL, and X-Macro grip modules

These pistols target different uses. The G17 is a duty-sized service gun; the P365 XL is built for concealed carry. Both are polymer-frame striker-fired 9mms, but the question is body type and carry method.