BLACKHAWK Sportster Adjustable Bipod, 9-13, Black 71BP02BK This Blackhawk Sportster Adjustable Bipod features a proven" time tested design for field or benchrest shooting and has a compact and lightweight design. It has no-rust anodized legs with increased spring tension and spring-return telescoping legs- 9" to 13". Easily attaches to sling swivel.