The nail gun, its trigger configuration, and the material being fastened are central evidence after a jobsite injury. A nail that passes through material presents different questions from a ricochet or an unexpected discharge. Preserve the tool and fastener before repairs or trigger changes alter the setup.
Record the manufacturer, model, serial number, power source, trigger configuration, fastener, and work material. Photograph the intended fastening point and any ricochet surface. Establish the operator’s grip and where nearby workers were positioned. Keep the nail and damaged material when feasible.
Obtain the manual, purchase or rental records, maintenance history, previous misfire reports, and any record of a trigger conversion. These documents should be compared with the tool itself, rather than assuming that its present configuration is the one supplied originally.
OSHA and NIOSH’s nail-gun safety guidance discusses trigger systems, sequential operation, training, and common injury mechanisms. It helps frame the investigation but does not establish what caused this injury. Determine whether the worker was trained on this model and whether production pressure encouraged a different firing method.
The employer, tool owner, rental company, contractor, and manufacturer may have separate roles. Workers’ compensation and any product or third-party claim should be evaluated independently. Our discussion of claims beyond the employer explains that distinction.
Our construction accident lawyers can review the tool and job records. The work-injury reporting guide covers the initial documentation. If the nailer is about to be returned or repaired, contact the firm about preserving it.
Editorial & Legal Accuracy Notice (Louisiana)
Sources checked: September 25, 2026.
Trigger design, use, defect and causation require inspection and task-specific evidence.