Barska Low Spring Loaded Bipod. The legs of the Barska Low-Spring Bipod are spring loaded for tension control so they can be retracted quickly. Bipod legs feature a posi-lock wheel and quick retract button. The bipod legs have a minimum height of 5.5" and maximum height of 7". The Barska Low-Spring Loaded Ar15/M16 Bipod includes a swivel stud and picatinny mount adaptor. Specifications for Barska Spring-Loaded Bipod: Minimum Height: 5.5 in Maximum Height: 7 in Weight: 9 lbs Features of Barska Low Spring Loaded Bipod: Spring loaded foldable legs Extendable legs feature posi-lock wheel and quick retraction button Dual mounting can be use it with either picatinny rail or swivel stud Picatinny mount and swivel stud mount (included) Fits picatinny/weaver style forends rails Strong and lightweight aluminum construction Rubberized feet for a more stabilized shooting position Limited 1 year warranty Package Contents: Barska Low Spring Loaded Bipod Barska AW11894: Low Spring Loaded Bipod