MANSON PRECISION AR-15 Parts & Accessories

Manson Precision is an American precision-reamer and chambering-tool manufacturer based in Grand Blanc, Michigan. The brand is a go-to supplier for custom rifle builders and gunsmiths, producing chamber reamers, headspace gauges, and throating tools across virtually every rifle and pistol cartridge — including mainstream commercial chamberings and wildcat specialty cartridges. Manson''s reamers are widely used in precision rifle smithing, custom builds, and competition chambering work. The company also produces headspace gauges and go/no-go tooling for barrel and chamber inspection. Manson Precision is a staple resource among professional gunsmiths and serious custom rifle builders.