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Anyone who has squinted at a plain black factory front bead at dawn or dusk knows the frustration. The Williams .570W Firesight fixes that with a red light-gathering fiber optic rod that pulls in ambient light and focuses it into a bright, glowing dot. In good light it lights up like a beacon, and even as the sun drops you still get a usable sight picture when your old iron sight would have disappeared into the shadows.
This is the steel version of the Williams Firesight bead, built to accept the red fiber optic rod and take a beating in the field. The "W" in 570W means it is the wide profile, sized at .531 for the dovetailed barrels you find on most .22 rimfire rifles and muzzleloaders. The .570 refers to the sight height, which is handy if your rifle is grouping high and you need a taller front sight to bring your point of impact back down.
This sight rides in a standard 3/8" dovetail and replaces your existing factory front bead. It is a great match for rimfire plinkers, small game rifles, and traditional muzzleloaders. If you are matching it to a rear peep or open sight, keep in mind that Williams often pairs a specific front height to the rifle, so the .570 is the tall option in the lineup when you need to correct a high-shooting gun.
Most dovetail swaps like this are straightforward, though the sight may need a little minor fitting to seat tight and centered. A brass or nylon punch is the right tool for tapping it home, and taking off just a hair at a time with a fine file beats forcing it. Once it is centered and snug, you are done.
Williams has been making sights in Davison, Michigan since 1926, and the Firesight line is what put them on the map. Unlike a tritium night sight, fiber optics feed off available light, so they shine brightest from dawn to dusk, under tree cover, or on overcast days rather than in pitch dark. For the money, it is one of the simplest upgrades you can make to an older rifle with tired iron sights.
The .570 is the height of the sight, which comes in handy when your rifle is shooting high and you need a taller front bead to correct it. The "W" stands for wide, sized at .531, which fits the dovetailed barrels found on most .22 rimfire rifles and muzzleloaders. Matching both the height and width to your rifle is the key to getting it right.
It seats in a standard 3/8" dovetail and replaces your existing factory front bead, so it works well on many .22 rimfire rifles and muzzleloaders. The width profile should match your barrel's dovetail, and it is worth measuring before you order. If you are unsure, checking your current sight dimensions or reaching out to us takes the guesswork out of it.
For most folks this is a straightforward dovetail swap that can be done at home. The sight may need a little minor fitting to seat tight and centered, so a fine file to shave off a hair at a time and a brass or nylon punch to tap it in are the right tools. If you would rather not fuss with it, a gunsmith can knock it out quickly.
The red rod gathers ambient light and focuses it into a bright, easy-to-spot dot, which is a big step up from a plain black factory bead. It really shines from dawn to dusk, under tree cover, or on cloudy days. Just remember it is not a tritium night sight, so it needs some available light to glow rather than working in total darkness.
| UPC | 053506590827 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 59082 |
| Color | RED |
| Style | Fiber Optic |
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