At Grundhauser Gun Works every firearm is meticulously built one at a time , hand fitted and tuned by a master craftsman. Each firearm is a unique precision custom piece, NOT an assembly line unit. Grundhauser Gun Works is the premier builder for World Champions, National Champions and top competition shooters alike. Highly sought after, Grundhauser Gun Works has become synonymous with the finest quality of firearms for Competition, Tactical and Personal Protection use.