Specifications： 
Color:Black 
Material:Nylon 
Interface:Picatinny / Weaver Rails 
Feature: 

1.folding thumb sliding mechanism, sliding spring loaded button can flip. 
2.the spring fold up view is easily activated by pulling the rear cover and can be folded by pressing down. 
3.compatible with most Picatinny / Weaver orbits. 
4.not applicable to natural gas blocks with tracks. 
5.impact resistant polymer construction provides lightweight durability. 
6.Please pull out the screw before installation, Then snap the screw into the groove of the guide rail. 

Package Contains: 
1 x Front Nylon Sight 
1 x Rear Nylon Sight 

1 x Allen Wrench