Glock G48 9mm vs Sig Sauer P365 XL 9mm

Both are slim 9mm compacts. The Sig P365 XL carries two more rounds (12+1 vs 10+1) and ships optic-ready; the Glock G48 runs a 0.47" longer barrel and stretches 0.68" longer overall. Weight and width are tied. The G48 gets the longer sight radius (5.98" vs 5.6"); the P365 XL gets the factory optic cut and the modular FCU.

Pick the Glock G48 if:

• You want the longer 4.17" barrel and 5.98" sight radius for better recoil control and aim radius
• You want the Glock aftermarket and a Glock manual of arms
• You prefer no slide cut if you're not planning to mount an optic

Pick the Sig Sauer P365 XL if:

• You want 12+1 capacity — two more rounds than the G48
• You want a factory optic cut without paying for the MOS variant
• You want a 0.68" shorter overall length for tighter concealment

Both run slim 1.1" frames and weigh within 0.04 oz of each other, so they carry similarly. The choice comes down to capacity, the optic cut, and barrel length.