The Timney Drop-In Trigger for Mossberg 100 ATR features a self-contained design with adjustable pull weight from 1.5-4 lbs and integrated two-position trigger blocking safety.Timney Drop-In Trigger System for Mossberg 100 ATRLightweight aluminum housing with Wire EDM cut componentsHeat treated steel trigger and sear constructionFully adjustable sear engagement and pull weight (1.5-4 lbs)Two-position trigger blocking side safetyTeflon nickel coated sear for lifetime durabilityBlack finishMade in USAThis precision trigger upgrade delivers improved accuracy and consistency for Mossberg 100 ATR rifle owners combining easy drop-in installation with professional-grade performance and safety features.