This trigger is adjustable for pull weight, creep, and backlash. Minor fitting may be required. Instructions included. The safety is a 3 position system, safety with bolt-lock, safety without bolt-lock, and fire. The Howa 1500 action does not take advantage of the safety with bolt-lock position, therefore it is necessary to remove the bolt-lock tab from the safety (instructions included). The overtravel adjustment screw has been eliminated, therefore the overtravel is not adjustable. If this trigger will not work with a particular style of Howa 1500, Timney will alter the trigger at no charge if the trigger is returned directly to Timney. Note: Compatible with Vanguard, Weatherby Vanguard (Factory 3 position safety), Howa 1500 (Factory 3 position safety.)