More than back-up - Samson A.R.M.S. #40L Flip Up Rear Sight (Low) and #40L-SP Plane Dual Aperture

This is a go to sight often relegated to the role of a back-up, as it is built to fit nicely under most proper eye position mounted primary optics. My kids and I use it as a primary sight on our non-precision rifles.
Pros: Intelligent Design and Hard Core Quality
Cons: Quality is Expensive!

This review was written in the old system and had content requirements that are different than reviews written today.