Utg bipod recon flex m-lok matte blk center h 5.7"-8" FEATURES:Fully Adjustable Legs5 Precut Extendable LengthsFlexible In-between PositionsCenter Height Adjustable From 5.7" to 8.0Requires the Length of 2 M-LOKA(R) Slots Per LegEquipped with Textured Nonslip Rubberized Foot Pads Other Features: Directly attaches to handguard , locking thumb wheel, precut, flexible locking positions, rubberized footpad, spring loaded slide locking ring