Two of the most popular full-size 9mm service pistols compared on specs, ergonomics, and price.
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| Specification | Glock Gen 6 17 Optics Ready | Sig Sauer P220 Nitron Full Size |
|---|---|---|
| Type | Pistol: Semi-Auto | Pistol: Semi-Auto |
| Caliber | 9mm Luger | .45 ACP |
| Action | Safe Action | Double Action |
| Capacity | 10+1 | 8+1 |
| Barrel Length | 4.49" | 4.4" |
| Overall Length | 7.32" | 7.7" |
| Weight | 22.04 oz | 30.4 oz |
| Finish | Matte Black nDLC | Matte Black Nitron |
| Stock / Grip | — | Polymer Grips |
| Sights | Front: White Dot, Rear: White Outline | Front: SIGLITE, Rear: Fixed SIGLITE |
| Safety | Safe Action – 3 Separate Automatic Safeties | Decocker |
| Receiver | Polymer | Aluminum Alloy |
| Magazines | 3 | 2 |
| MSRP | $745 | $1,299.99 |
| UPC | 764503068225 | 798681437238 |
| Model Code | P61750201 | — |
Rows marked with have different values
Optic Ready, Palm Swell, RTF6 Grip Texture, Flat Faced Trigger, Enlarged Beavertail, Thumb Rest
CA Approved
A direct pair makes sense once you already know you want a larger 9mm platform and need to decide whether the remaining differences in price, dimensions, and features are enough to change your choice.
Start with the highlighted rows, then look at total size, weight, capacity, and pricing together instead of isolating one number at a time.
If this matchup still feels too narrow or you are not sure these are your two best candidates, widen the shortlist with a broader full-size or top-rated page before returning to compare.
Use these guides, FAQs, and category pages if you want more context before you commit to this matchup as your final shortlist.
Answers to common 9mm shopping questions, including why 9mm is so popular, how to think about size, and how to narrow down the right 9mm handgun.
Answers to common questions about how to compare handguns, what to focus on first, and how to keep side-by-side comparisons useful.
