Leupold BackCountry Cross-Slot Base Features The Leupold BackCountry Cross-Slot Base is machined from 7075-T6 aircraft-grade aluminum giving it the strength to handle recoil while keeping overall rifle weight down for backcountry carry. The cross-slot design accepts both Picatinny and Weaver-style rings so hunters can pair it with the ring system they already prefer. A milled-in recoil lug locks the base against the receiver to prevent shifting under recoil while the low-profile keeper screw keeps the profile sleek. The built-in 20-MOA slope extends useful elevation adjustment for rifles chambered to reach well past typical hunting distances. This base is purpose-built to fit the Nosler M21 short action aligning precisely with the receiver for a secure repeatable mount every time. Mounting hardware is included so installation is straightforward without hunting down extra screws. At only 1.8 ounces it adds negligible weight to a long-range hunting rig built for mountain and backcountry pursuits. Made in the USA and backed by Leupold s reputation for rugged dependability this base is the kind of link between scope and rifle that hunters can trust not to let them down in the field. Leupold BackCountry Cross-Slot Base Specifications Manufacturer: Leupold Model: BackCountry Cross-Slot Base Compatible Hosts: Nosler M21 Color: Matte Black Material: Aluminum Action: Short MOA: 20 Length: 6.3 Height: 0.4 Mount Type: Picatinny / Weaver Style Rings Included: No Includes: Mounting Hardware Weight: 1.8 oz Available At: GrabAGun