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The Forster Drill Bushing #28 is a hardened steel guide bushing built for the Forster Universal Sight Mounting Fixture. It drops into the sliding over-arm and gives your drill bit a precise path down to the barrel or receiver, which is what keeps your holes from wandering when you're drilling and tapping for scope bases, receiver sights, or shotgun beads. This particular bushing (part number UF1000-031) is the drill-size guide that pairs up with the 8-40 thread work, so if you're stepping up from the standard 6-48 setup, this is one of the pieces you'll want on the bench.
The whole point of the Forster fixture is repeatable, straight holes without a milling machine, and the bushings are the heart of that. The bit rides through the hardened, ground bore of the bushing instead of chattering across a curved barrel, which knocks out the drill runout that ruins otherwise good guns. When it's time to cut threads, you swap the drill bushing for the matching tap bushing so the tap stays square and doesn't cock over and snap. Losing a tap in a receiver is the kind of headache this system is designed to prevent.
Gunsmiths who've owned these fixtures for decades will tell you the tooling just holds up, and the bushings are no exception. Ground from hardened steel, the #28 shrugs off repeated use and keeps its dimensions so the fit stays snug in the over-arm. Forster has been making this gear in the USA since 1935, and the bushings are cut to the same tolerances as the fixture itself.
Keep in mind this is a single replacement or add-on bushing, not the complete fixture or a full set. If you already run the Forster Universal Sight Mounting Fixture and need the #28 to round out your 8-40 capability or replace a lost one, this is the exact piece.
It's a hardened steel guide that fits into the over-arm of the Forster Universal Sight Mounting Fixture. The bushing gives your drill bit a straight, precise path so your holes for scope bases, receiver sights, or shotgun beads come out true and free of runout.
Yes. The #28 is a component that works inside the Forster Universal Sight Mounting Fixture and isn't a standalone tool. If you don't own the fixture, this bushing on its own won't do much for you.
The Forster fixture ships with the 6-48 bushings, and additional sets are sold separately. The #28 is part of the 8-40 thread group, so it's a good pick if you're expanding your fixture beyond the standard 6-48 work or replacing a bushing you've lost.
This is the drill bushing. In the Forster system you drill through the drill bushing first, then swap in the correctly sized tap bushing before cutting threads, which keeps the tap from cocking over and breaking.
| UPC | 757253006852 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | UF1000-031 |
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