Samson AR-15 manual flip-up sights pair an HK-style folding front sight with an A2-style folding rear sight. They give you a durable backup sight set that stays out of the way of your optic until you need it, then locks up and holds zero. Both sights lock in the deployed position, so they will not fold under recoil or when bumped. The front sight accepts any aftermarket front sight post replacement built to mil-spec dimensions, so you can swap in a high-visibility or tritium post. Each sight clamps to the rail with a stainless steel clamp, and the bodies are machined from 6061-T6 aluminum. Features: HK-style folding front sight A2-style folding rear sight Manual flip-up operation, locks in the deployed position Front accepts mil-spec front sight posts Stainless steel rail clamps 6061-T6 aluminum construction Sold as a front and rear pair Fitment note: The front sight is not intended for lower-height gas block rails. Mount it on a handguard or gas block rail at standard flat-top height so the front and rear line up. Confirm co-witness with your optic and zero the irons before you rely on them.