AIM Sports Inc AR Handguard Rail Bipod-Short Black Medium. Adjustable length legs give the AIM Sports AR Bipod a height range from 6.8" to 9.4". Specifications for AIM Sports AR Handguard Rail Bipod: Height: 6.8" - 9.4" Weight: 16 oz. Features of AIM Sports Inc AR Handguard Rail Bipod Clamps directly to handguard rail Adjustable legs with retract/collapse button Matte black aircraft grade aluminum Compatible with Weaver / Picatinny 1913 Rails Package Contents: AIM Sports Inc AR Handguard Rail Bipod AIM Sports Inc BPARSS: AR Handguard Rail Bipod-Short Black Medium