The Sons of Liberty Gun Works Fighting Trigger was built to strike the perfect balance between reliable Mil-Spec triggers with the smooth and consistent break of aftermarket AR-15 triggers. The Liberty Fighting trigger averages at approximately 6 pounds and features a Nickel PTFE coating to reduce friction and maintain lubricity. With the included slave pin, this two-piece trigger is easy to install in your lower receiver. The trigger and hammer pin diameters are Mil-Spec .154 for maximum compatibility with most AR-15 rifles. This fire control group comes with everything you need to install it into your rifle and be shooting at the range in the same day. If you are looking to upgrade your AR without breaking the bank, check out the ultra-reliable Liberty Fighting trigger.