Quick view Leupold Leupold Backcountry Cross-slot, Leu 171344 Ws 1 Pc Base Brn Ablt Mt $41.03 $34.59 Backcountry cross-slot bases are machined from 7075-t6 aircraft-grade aluminum for lightweight, rugged performance.Fits both picatinny and weaver-style rings.These 1-piece bases feature a 20-moa slope for long-range shooting applications.Type: 1-Piece... Compare Add to Cart