Browning X-Bolt Picatinny Rail 20 MOA Black

Machined from aircraft-grade alloy. - Features an integrated bubble for leveling your rifle during scope setup and when shooting in the field. - X-Bolt bases feature a four screw per base mounting platform for a secure fit. Eight screws total. - Picatinny-style bases are generally compatible with both Weaver-style and Picatinny-style rings