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The Ruger American Rimfire is a great little rifle, but the factory trigger is one of the first things folks want to change once they start pushing for tighter groups. This Timney 640R fixes that in a hurry. It's a self-contained unit that drops into your American Rimfire and gives you a smooth, crisp break with none of the take-up and grit you get from the stock trigger. It comes factory set at a clean 3 pounds, and you can tune it anywhere between 1.5 and 4 pounds to match how you shoot.
Timney has been building triggers since 1946, and this one is fully adjustable for sear engagement, over travel, and pull weight, so you can chase down exactly the feel you want. The housing is 6061-T6 aluminum that's anodized for durability, and the sear is EDM-cut and coated with Teflon-nickel for slick, consistent movement shot after shot. Each trigger gets tested and calibrated by hand before it ships, which is a big part of why Timney has the reputation it does with Ruger owners.
This is a bench job most people can handle at home. The kit reuses your rifle's factory safety components, so you'll transfer the safety over from the original trigger during the swap. Plan on knocking out a couple of small roll pins, moving the safety parts across, and dropping the new trigger in. Most folks have it done in around 15 minutes. It's worth having spare roll pins on hand and taking a quick photo of the safety spring position before you start, since those little pins can be stubborn to knock out.
A word on that 1.5-pound setting: when Timney says a pound and a half, they mean it, so ease into the lighter adjustments and test carefully before you head out. Once it's dialed, the difference at the range is night and day. The blade safety in the factory shoe is gone, the break is predictable, and a lot of shooters see their groups tighten right up. This trigger fits the American Rimfire Standard, Compact, Target, and Wood Stock models with right-hand actions.
Yes, it's compatible with the Ruger American Rimfire Standard, Compact, Target, and Wood Stock models. It's built for right-hand actions and is not compatible with left-handed actions or two-stage varmint setups. If you've got a standard right-hand American Rimfire in .22 LR, .22 WMR, or .17 HMR, you're covered.
No, most people install it themselves in about 15 minutes. You'll remove the barreled action from the stock, knock out a couple of small roll pins, transfer the factory safety components over to the Timney, and drop the new trigger in. It helps to have spare roll pins and a photo of the safety spring position before you start, since the original pins can be tough to knock out without bending.
It ships factory set at a crisp 3 pounds. From there you can adjust it anywhere from 1.5 to 4 pounds using the adjustment screw, along with settings for sear engagement and over travel. Turn the screw clockwise to increase pull weight and counterclockwise to lighten it, and test carefully as you approach the lighter end.
It's a noticeable upgrade. The stock trigger works fine for casual plinking but has more take-up and creep than most people want for precision work. The Timney breaks clean and predictable, ditches the intrusive blade safety in the shoe, and helps a lot of folks tighten up their groups at the range.
| UPC | 081950640201 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 640R |
| Color | Black |
| Length | 7.7000 |
| Model | |
| Product Type | Trigger |
| Shipping Weight | 0.19 |
| Style | Rimfire |
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