Square-cut lug may require minor filing for receivers with radiused lug cuts; Full-length Picatinny cross slots for flexible scope ring and accessory mounting; One-piece Picatinny-style base compatible with Picatinny or Weaver scope rings; Machined from solid 7075 T6 aircraft-grade aluminum; Tumbled, sand blasted, and Type III anodized for long-lasting durability; Ideal for hunters and tactical shooters