Forster USMF Drill Jig Bushing 21 Drill

• Guided #21 drill alignment: This bushing keeps the drill centered in the Universal Sight Mounting Fixture, helping produce straighter, more consistent holes when preparing receivers and sight-mounting surfaces.
• Hardened steel construction: The steel body resists wear from repeated shop use, so the bushing maintains fit and guidance accuracy over time instead of becoming a consumable part too quickly.
• Part of the 10-32 bushing set: Used with the matching pre-drill and tap bushings, it supports a controlled drill-and-tap workflow that reduces setup errors and helps maintain thread alignment.
• Made for the Forster USMF system: Built for the Universal Sight Mounting Fixture, it integrates into a proven sight-mounting setup used for drilling scope mount, receiver sight, and similar hole patterns.
• Compact workshop accessory: At 10.00 g, the bushing is easy to handle, store, and swap during multi-step gunsmithing work without adding clutter to the bench.

About the USMF Series

The Forster USMF Series is built around the Universal Sight Mounting Fixture, a gunsmithing system designed to support accurate drilling and tapping for sight and mount installation on long guns. Within Forster’s lineup, it sits alongside the company’s precision reloading and shop tools, serving users who need repeatable alignment rather than general-purpose bench hardware. The system is intended for gunsmiths and careful workshop users fitting scope mounts, receiver sights, and similar components where hole spacing and straightness matter.

A key characteristic of the series is its use of interchangeable drill jig bushings matched to common thread patterns. Instead of relying on freehand positioning, the fixture and bushing combination guides the tool through a controlled path, helping keep holes true to the workpiece. That approach suits practical shop work where consistency from one job to the next is more important than speed alone. The USMF family is therefore defined less by optics-related features and more by mechanical alignment, durable steel components, and a modular format that lets the user select the correct bushing set for the thread standard being cut.

About the Forster USMF Drill Jig Bushing 21 Drill

The Forster USMF Drill Jig Bushing 21 Drill is a dedicated accessory for the Universal Sight Mounting Fixture, intended for the drilling stage of a 10-32 mounting job. Its role is simple but important: it supports the drill bit as it enters the work, helping maintain alignment so the hole starts where it should and stays on track. In practical gunsmithing terms, that means less chance of drift at the entry point and a better foundation for the tapping step that follows.

Because this bushing is made from steel, it is suited to repeated use in a workshop environment where setup parts are handled often and expected to keep their shape. As part of the USMF bushing system, it works within a sequence that includes the matching pre-drill and tap bushings, so the drilling and threading process stays organized around one thread standard rather than improvised tool choices. That is especially useful when mounting bases or sights, where hole position and thread alignment directly affect fit.

Its compact format and silver finish make it easy to identify and swap during bench work, while the low 10.00 g weight keeps handling straightforward. For users already working with the Forster Universal Sight Mounting Fixture, this bushing is a purpose-built part that supports cleaner, more repeatable mount installation work.

About Forster

Forster Products dates its history to 1935 and focuses on precision reloading and gunsmithing tools. The company is based in Lanark, Illinois, and states that its products are made in the United States. Across its catalog, Forster is known for tooling that emphasizes alignment, repeatability, and controlled adjustment rather than unnecessary complexity.

Its product range includes reloading dies, case trimmers, headspace gauges, and sight-mounting fixtures, which places this USMF accessory within a broader workshop-oriented system. Forster is also known for products such as the Co-Ax Press and Bench Rest seating tools, reflecting long-standing experience in equipment where precise fit and straight-line operation matter. That background is directly relevant to a drill jig bushing, where dependable guidance and dimensional consistency are the whole point of the design.

Main Features

• Manufacturer: Forster
• Product type: Drill jig bushing
• Compatibility: Mounts
• Material: Steel
• Weight: 10.00 g
• Color: Silver
• Made in: USA

Warranty

Forster provides a 2-year warranty for this product. This stated period covers defects in materials and workmanship and gives clear, time-defined support for workshop use.