FAB Defense Front and Rear Offset Flip-Up Sights Features The FAB Defense offset flip-up sight set is built as a backup sighting solution for use in conjunction with magnification lenses during close-quarters scenarios folding down low when the primary optic is in use and snapping up instantly when needed. The rear sight labeled RBS can be manually adjusted for windage while the front FBS sight adjusts for elevation giving the shooter a complete zeroing solution without any tools required. Both sights mount to a standard 1913 MIL-STD Picatinny rail so they attach directly to an AR-15 receiver or handguard rail without additional hardware. The offset angle keeps the sights out of the way of the primary optic s sight picture until the shooter cants the rifle to use them. Constructed from durable fiberglass reinforced polymer paired with metal components the set balances low weight with real-world durability for duty and range use. Folded the kit measures just 52mm long 32mm wide and 14mm tall and deploys to 30mm long and 42mm tall keeping the footprint compact on a crowded rail. At roughly 30 grams total the sights add negligible weight to a rifle build. Finished in Black and available in both right and left side variations the FAB Defense offset sight set is for sale at GrabAGun for AR-15 shooters who want a dependable no-tools backup sighting system alongside their primary optic. Fab Defense Front and Rear Offset Flip-Up Sights Specifications Manufacturer: Fab Defense Model: Front and Rear Offset Flip-Up Sights Color: Black Material: Polymer / Metal Mount Type: Picatinny Rail Compatible Hosts: AR-15 Length: 52 mm Width: 32 mm Weight: 30 gr Available At: GrabAGun