Firstly, Timney Sportsman Triggers feature a lightweight alloy housing and hardened steel working surfaces. They are lightweight, rugged and durable. The trigger pull is adjustable from 2 to 4 lbs and is adjustable for Sear Engagement, Overtravel and Pull weight. These triggers require the use of the original safety.
Features
 
A true drop in trigger
Timney-designed, unique trigger blocking safety
Trigger allows you to become more accurate with your rifle
No gunsmith needed, easy to install
Trigger will not move on safe
Ready for the range right out of the box or adjustable for custom feel
Fully adjustable for feel