KNS AR-15/AR15 Front Sight Post 7 Pack Assortment, Black + Ultimate Arms Gear Tactical Aluminum Automatic Weaver/Picatinny Rail Front/Rear Combo Set Flip Up Backup Post Back Up Iron Sight Mount Package Includes: KNS 7 Pack AR15 Front Sight + Ultimate Arms Gear Front & Rear Flip Up Sights. Assortment of 7 Precision Front Sight Posts Includes: 3 Square Posts with widths of 0.034, 0.052 and 0.072; 3 Round Dot Posts with diameters of 0.034, 0.052 and 0.072; 1 V-Notch Post and Inverted V Post (point up). All Sight Bodies Are Constructed Of Steel with a Black Oxide Finish. MADE IN THE USA. Ultimate Arms Gear Flip-Up Front and Rear Sight Towers Complete with A2 Post Assembly with Locking Retention and Precision Elevation Adjustments for Greater Accuracy. Mounting Decks Designed to be used with Handguard&Flattop both will fit all 7/8" Picatinny/Weaver style. Easy Quick And Secure Installation -Allen Screw Locking Clamp Rail Base Retention For Maintaning Zero Under Heavy Conditions. Windage and Elevation Adjustable. Slim Design for Low Profile Silhouette when Stowed.