Rifle Bipod Spring Return adjustable With Adapter for Harris Style

-Fully adjustable legs by lock button
-Universal Picatinny Rail weaver adapter (21mm) optionaletal construction
-All Matt Black finish
-Heavy duty design
-Foldable arms with spring tension control
-Rubber feet PAD for antislip , shockproof

6~9 inch:
Adapter Choice: Without  or  With
Height: 6 inches/ 152mm (retracted)----9 inches / 225 mm (fully extended)
Leg adjusting level: 5

9~13 inch:
Adapter Choice: Without  or  With
Height: 9 inches/ 225mm (retracted)----13 inches / 340 mm (fully extended)
Leg adjusting level: 10

13~21 inch:
Adapter Choice: Without  or  With
Height: 13 inches/ 330mm (retracted)----20.5 inches / 520 mm (fully extended)
Leg adjusting level: 13