Objectives: To evaluate whether strength differences between children and women might keep children from firing handguns and to determine how many young children can fire available handguns.
Design: One- and two-index finger trigger-pull strength was tested using a standard protocol. Data on trigger-pull settings of 64 commercially available handguns were obtained.
Setting and participants: Convenience sample of well children and their mothers at four Chicago (Ill)-area pediatric practices for health supervision visits, and of siblings of emergency department patients, during an 8-week period.
Intervention: None.
Main outcome measure: One- and two-index finger trigger-pull strength of mothers and children.
Results: Twenty-five percent of 3- to 4-year-olds, 70% of 5- to 6-year-olds, and 90% of 7- to 8-year-olds have a two-finger trigger-pull strength of at least 10 lb, the fifth percentile one-finger trigger-pull strength of adult women. Forty (62.5%) of 64 handguns require trigger-pull strength of less than 5 lb; 19 (30%) of 64 require 5 to 10 lb.
Conclusions: Significant overlap exists in the trigger-pull strength of young children and women, limiting the potential use of increased trigger-pull settings to discourage firearm discharge by children. Young children are strong enough to fire many handguns now in circulation.