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The stock brass bead on most shotguns works fine until the light gets low or your eyes aren't what they used to be. Marble's built the Expert fiber optic bead to fix exactly that. This is the green version with a 6-48 thread and a 3/32" shank, machined to drop into ribs already set up for that thread size. The fiber optic rod pulls in surrounding light and channels it straight to your eye, giving you a bright green dot that's easy to lock onto whether you're tracking clays or leading a bird through cover.
These Extra-Lum beads are built to gather roughly 500 percent more light than an old-school fluorescent bead, and the fiber optic cable is UV protected and polished to move as much of that light to your eye as possible. The result is a bead that glows in overcast, at dawn, and deep in the timber, but stays small enough that it doesn't change the classic look of your barrel. Bead size runs about .094" diameter, so it reads clean against most ribs without blotting out the target.
Installation is straightforward if your shotgun already has a 6-48 threaded hole in the rib. You back out the existing bead and thread this one in its place. If your gun uses a different thread or a pressed-in bead, a gunsmith can tap or adapt the hole to take it. Marble's and Brownells both publish thread charts by shotgun make, which is worth a look before you order so you match the 6-48 to your setup.
Color choice comes down to preference and how your eyes read light. Green is the go-to for a lot of hunters because it holds up well in the field and glares less than orange in bright sun, while still popping in shade and low light. If you shoot a lot of upland or waterfowl and want faster target acquisition without a big optic, this little bead earns its keep.
It threads in on shotguns set up for a 6-48 front bead with a 3/32" shank, which covers a lot of common ribs. If your gun uses a different thread size or has a pressed-in bead, the hole can be tapped or adapted by a gunsmith. Marble's and Brownells both offer thread charts by shotgun make, so check yours against the 6-48 spec before ordering.
It's a big jump. The Extra-Lum fiber optic gathers around 500 percent more light than a standard fluorescent bead, and the polished, UV protected cable pushes that light right to your eye. In low light, overcast, or shaded timber, the green dot glows where a brass bead just goes dark.
Green tends to be the favorite for field and hunting use because it glares less in bright sun while still standing out in shade and low light. Orange can look hotter on a sunny range, but green is easier on the eyes across changing conditions. It really comes down to how your own eyes read color, so both are solid choices.
This is a front bead that replaces the existing front sight on your shotgun's rib. It's designed for fast target acquisition when you're pointing and swinging, not for precise rear-sight aiming. Pair it with your gun's natural point of aim and you'll pick up birds and clays quicker.
| UPC | 871373005158 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 064819 |
| Style | Fiber Optic Beads |
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