NightForce XTRM Base for Winchester 70 One Piece 20 MOA Base Long Action Black. These Bases by NightForce are made for both Winchester 70 Long & Short Action Rifles as well as Winchester 70 Short-Mag Rifles. Night Force Winchester 70 One-Piece Bases feature an integral recoil lug machined on the bottom of the base which extends into the ejection port of the receiver. The lug is designed to give you a precise secure fit relieving stress from the screws while keeping your base from moving. These Night Force Bases allow you to be sure that your rifle scope is will stay in place every time. Available options of Night-Force Winchester 70 One Piece 20 MOA Bases: A196: Night-Force Winchester 70 One Piece 20 MOA Bases Type NightForce Winchester 70 One Piece 20 MOA Base - Long Action A198: Night-Force Winchester 70 One Piece 20 MOA Bases Type NightForce Winchester 70 One Piece 20 MOA Base - Short Action A199: Night-Force Winchester 70 One Piece 20 MOA Bases Type NightForce Winchester 70 20 MOA Base - Short Action Short Mag Features of NightForce Winchester 70 One-Piece 20 MOA Bases: Integrated recoil lug Specifications for NightForce XTRM Base: Manufacturer: NightForce Color: Black Cant: 20 MOA Gun Make: Winchester Gun Model: Winchester Model 70 Gun Type: Rifle Additional Features: Long Action Condition: New Package Contents: NightForce XTRM Base NightForce A196: XTRM Base for Winchester 70 One Piece 20 MOA Base Long Action Black