Ruger Elite 452, Trigger, Fits any AR-15,(Fully Assembled to Allow Dry-Fire or for Use as a Trigger Manipulation Training Aid) 90461 The Ruger Elite 452 AR-Trigger is a two-stage trigger with a smooth" crisp" 4.5 pound trigger pull and has a 30% faster lock time over standard MSRs. This rugged" reliable and safe trigger is a Genuine Ruger Factory Accessory and comes in a completely self-contained module.