Talley Manufacturing's Browning X-Bolt Picatinny Rails are machined entirely from high grade alloy and protected with a hard-coat anodizing to 65 Rockwell ensuring the craftsmanship of these Picatinny Rails last the lifetime of your firearm. Mounts to receiver with 6-48 Length Screws. The Browning X-Bolt Picatinny Rails are all designed and manufactured with precision to fit your firearm with the industrys tightest manufacturing tolerances. Talleys Browning X-Bolt 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 Rails for all applications and firearms enthusiast.