Before

As-machined steel alloy firearm components prior to polishing and surface preparation, showing machining marks and unfinished surfaces.

After

Polished steel alloy firearm components after automated mass finishing, showing improved surface consistency and plate-ready surfaces.

Objective

Reduce manual finishing time for steel alloy firearm components prior to coating by smoothing surfaces, removing machining marks, and improving surface consistency across mixed part geometries.

Part DescriptionFirearm Components
IndustryFirearms/Weaponry, Machine Shop Applications
Fabrication MethodCNC Machined
MaterialSteel Alloy
Process TypeBurnish, Polish, Deburring, Surface Preparation
Equipment TypeDrag Finisher, Centrifugal Disc Finisher, Centrifugal Barrel Finisher/Harperizer

Solution

Bel Air developed an automated mass finishing process to polish and condition steel alloy firearm components that previously required extensive manual finishing. The objective was to reduce machining marks, improve surface uniformity, and prepare the components for downstream coating without affecting critical dimensions or functional features.

Using controlled finishing methods, the process uniformly refined external surfaces across multiple part geometries, reducing surface roughness and part-to-part variation while maintaining dimensional integrity.

The optimized workflow significantly reduced manual labor and rework while increasing throughput, making it well suited for firearms manufacturing environments where surface consistency, coating preparation, and production efficiency are critical.

If you are unsure what equipment and media you require to achieve your desired surface finish, then send us your part, and we will evaluate it and provide you with a metrology report.