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The Sig Sauer P320 flat trigger is a factory-spec replacement that takes the stock curved trigger and replaces it with a cleaner, more direct design. Built to Sig Sauer's exacting standards, this trigger drops straight into your P320 and works across the entire platform whether you're running 9mm, .40, or .357 Sig.
What makes the flat design stand out is how it sits in your hand. By positioning your finger lower on the trigger, you get better mechanical advantage through the press. The 90-degree break is crisp and defined, so the break point feels distinct and repeatable shot after shot. Users consistently report that while the trigger pull weight stays the same, the flat face makes the pull feel noticeably lighter because of where your finger naturally sits.
The geometry here matters. With a curved trigger, your finger tends to rest midway on the face, which can bury the break point somewhere in the middle of your range of motion. The flat profile lets your finger settle lower and more naturally, which translates to a straighter rearward press and better control. That's especially valuable if you're shooting from concealed carry, duty, or competition positions where consistency and shot placement count.
This trigger fits all P320 variants including the full-size, compact, subcompact, X-Series, and military M17 and M18 models. While the trigger itself is straightforward drop-in ready, professional installation is recommended since the fire control group sits deeper in the grip module. The finish is black steel with a durable, factory-quality coating that matches Sig Sauer's OEM standards.
No, the pull weight stays the same as your stock trigger. What changes is how the pull feels. The flat profile allows your finger to rest lower on the trigger face, which improves mechanical advantage and makes the existing pull weight feel noticeably lighter during actual shooting.
Yes, this factory Sig Sauer trigger works across the entire P320 platform including full-size, compact, subcompact, X-Series models, and military M17 and M18 variants. It covers all caliber options as well including 9mm, .40 S&W, and .357 Sig.
The trigger is designed as a direct replacement and drops in without modification, but the installation requires disassembling the fire control group inside the grip module, which goes beyond a basic field strip. Sig Sauer recommends having a certified armorer handle the installation to ensure everything functions safely.
The main difference is hand position and feel. The flat face allows your trigger finger to sit lower and settle more naturally, creating a straighter rearward press. This improved geometry makes follow-up shots easier to control and helps with shot placement consistency. The choice between flat and curved ultimately comes down to personal preference and hand fit.
| UPC | 798681580545 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | TRG-320-FLAT-BLK |
| Color | Black |
| Length | 4 |
| Model | |
| Package Height | 0.7 |
| Package Width | 3.0 |
| Product Type | Accessory-Triggers |
| Shipping Weight | 0.1 |
| Style | Flat |
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