Talley 2-Piece Picatinny Rail for Winchester Model 70 Standard Caliber .860 Rear Screw Hole Spacing SPECIFICATIONS BRAND: TALLEY CA PROP 65: YES RING & MOUNT PIECES: 2-PIECE RING & MOUNT TYPE: PICATINNY STYLE DESCRIPTION Made in America, Talley Manufacturing’s 2-Piece Winchester Model 70 Picatinny Rails are machined entirely from high grade 7000 series alloy and protected with a hard-coat anodizing to 65 Rockwell ensuring the craftsmanship of these Picatinny Rails last the lifetime of your firearm. These 2-Piece Winchester Model 70 Picatinny Rails are all designed and manufactured with precision to fit your firearm with the industry’s tightest manufacturing tolerances. This 2-piece system offers the standardize picatinny mounting option without overbridging the action to allow for easier top loading of the rifle. Talley’s 2-Piece Winchester Model 70 Pic Rails provide a mounting platform for all optics mounts that have been designed in accordance with the MIL-STD-1913 Pic Rail specifications, to include all Talley Picatinny scope mounts. Whether you are looking for a tactical scope ring, a modern sporting ring or our traditional scope ring with a Picatinny mounting system; Talley has Picatinny mounts for all applications and firearms enthusiast. American Made, Lightweight 7000 series Aluminum Alloy Fully CNC Machined Hard-coat anodizing to 65 Rockwell Designed in accordance with the MIL-STD-1913 Pic Rail specifications Picatinny set up without overbridging the action – ease of access for top-loading. Includes mounting screws and wrench. (1/4 6-48 Screws / T-15) Available for Winchester Model 70 Standard Caliber rifles with a rear screw hole spacing of .860? and Post 64 Magnum Length actions with a rear screw holes spacing of .330?. **Magnum Calbers include: .300 H&H, .375 H&H, .300 Weatherby, .340 Weatherby, and .416 Rem