GlobalPioneer Official Product, Lifetime Warranty by GlobalPioneer. Mounting Decks designed to be used Picatinny/Weaver style rails. Automatic Flip-Up Quick Deploy Front and Rear BUIS Aiming Polymer Sight The front sight has an adjustable A2 post and a ball bearing pivot detent with posi-lock design that automatically locks into place to guarantee zero when raised . The rear sight is adjustable for windage and has two apertures. User Friendly Locking with Allen Wrench for Easy And Quick Installation. HEAVY DUTY POLYMER - lightweight and functional