Description
The factory trigger on the SCAR 17 gets the job done, but most folks who run these rifles hard know it leaves a lot on the table. Timney's Featherweight fixes that with a clean, single-stage pull set at 3.5 pounds and no creep to fight through. You get a straightforward break and a quick reset that makes follow-up shots feel natural, whether you're stretching things out at distance or running drills up close.
This is a self-contained, 100 percent drop-in unit, so installation is refreshingly simple. It uses your rifle's original hammer and trigger pins, which means no fitting, no adjusting, and no trip to the gunsmith. Most people have it swapped out and ready for the range in a few minutes with basic tools, and the proprietary design is built to keep the pins from rotating or walking out under recoil.
What Sets the SCAR 17 Featherweight Apart
Timney built this one to handle .308 and 7.62×51 pressure the right way. The hammer is EDM machined from S7 tool steel for wear resistance and impact strength, then finished with a Teflon-nickel coating for a smooth pull. The rest of the internals are cut from A2 tool steel and heat treated to Rockwell 56 to 60 for a long service life, all housed in a lightweight, anodized 6061-T6 alloy shell. Worth noting: the SCAR 17 version (part 691S) runs a stronger hammer spring specifically to reliably ignite heavier .308 primers, so make sure you're grabbing the 17 unit and not the 16 module.
Living With the Timney SCAR 17 Trigger
Owners consistently describe the break as crisp and predictable with a genuinely short reset, and installation gets praised as easy even for first-timers. A common tip from the SCAR crowd is to snug those set screws down good and tight since they're seating against the rifle's polymer housing, which keeps everything locked in over a long range day. It carries Timney's lifetime warranty and is made in the USA.
Key Specifications
- Manufacturer: Timney
- Model: Featherweight
- Manufacturer Part Number: 691S
- UPC: 081950691234
- Fitment: FN SCAR 17 / SCAR 17S
- Trigger Type: Single Stage, Curved
- Pull Weight: 3.5 lb (factory set, non-adjustable)
- Housing: 6061-T6 alloy, anodized
- Hammer Material: S7 tool steel, EDM machined, Teflon-nickel coated
- Internal Components: A2 tool steel, heat treated to Rc 56-60
- Spring: Stronger hammer spring for .308 / 7.62×51 primers
- Installation: Drop-in, uses original hammer/trigger pins, no gunsmith needed
- Overall Length: 7.45 in
- Warranty: Timney Lifetime Warranty
- Country of Origin: Made in USA
What’s Included
- Timney Featherweight self-contained trigger module for FN SCAR 17 (part 691S)
- Installation instructions
Frequently Asked Questions
Will this Timney trigger fit my SCAR 16 too?
No, the 691S is the SCAR 17 specific unit and runs a stronger hammer spring built to reliably light off heavier .308 and 7.62×51 primers. The SCAR 16 uses a different Timney module. Make sure you're matching the trigger to your rifle's caliber to keep ignition consistent.
Do I need a gunsmith to install the SCAR 17 Featherweight trigger?
Not at all. It's a self-contained drop-in unit that installs using your rifle's original hammer and trigger pins, so there's no fitting or adjusting required. Most people have it done in a few minutes with basic tools, and a quick YouTube walkthrough helps if it's your first time.
Is the 3.5 lb pull weight adjustable?
It is not. Timney sets the pull weight at the factory to 3.5 pounds with no creep, so it's ready for the range straight out of the box. This is a fixed single-stage design meant to give you a consistent, repeatable break every time.
How do I keep the trigger locked in place in the SCAR housing?
A well-known tip among SCAR owners is to snug the set screws down nice and tight, since they seat against the rifle's polymer housing rather than metal. Getting them firmly torqued helps keep everything secure over a long day of shooting. The proprietary design also works to prevent the pins from rotating or walking out under recoil.




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