Glock G20 Gen5 MOS 10mm vs Sig Sauer P320 XTEN 10mm

Both are full-size 10mm pistols at 15+1, but the Sig P320 XTEN is built heavier. It adds 4.6 oz (33.0 oz vs 28.4 oz), runs a 0.39" longer barrel, and stretches 0.43" longer overall. That extra mass and barrel matter for 10mm because full-power loads run hot. The XTEN's trigger also breaks 1.6 lb lighter at 4.3 lb against the G20's 5.9 lb, the largest trigger-weight gap among the .45/10mm Glock vs P320 pairings. Both ship optic-ready.

Pick the Glock G20 Gen5 MOS if:

• You want 4.6 oz less weight on the belt for woods carry or all-day hiking
• You want the Glock aftermarket and magazine ecosystem in 10mm
• You want a shorter 4.61" barrel for holster compatibility with existing G20/G21 setups

Pick the Sig Sauer P320 XTEN if:

• You want a 1.6 lb lighter trigger pull (4.3 lb vs 5.9 lb) — the largest trigger gap in this lineup
• You want a 5.0" barrel and 4.6 oz of extra slide mass to absorb 10mm recoil for faster follow-ups
• You want the serialized FCU that swaps between P320 grip modules across calibers

Both are full-size 10mms at 15+1 with factory optic cuts. The choice is light-and-carryable (Glock) or heavy-and-shootable (Sig).