Sniper Tactical Polymer Front and Rear Combo Rifle Sight Set for Picatinny Rails Tactical Black Polymer Front and Rear Rifle Sight Flip-up Posi-Lock Design to Hold Zero in any Condition Dual Aiming Aperture with Precision Wind and Elevation Adjustment Solid Lock onto Picatinny Rail, Lightweight and Durable Designed for Primary and Secondary Rifle Sight