Talley PLM700ACI Picatinny Rail w/Anti-Cant Indicator Black Anodized Aluminum Christensen Arms Ridgeline Long Action 20 MOATalley Manufacturing's Christensen Arms 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. The Christensen Arms Picatinny Rails are all designed and manufactured with precision to fit your firearm with the industry's tightest manufacturing tolerances. Talley's Christensen Arms Pic Rails