Talley Manufacturing's 2pc 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 Pic Rail bases provide a mounting platform for all optics mounts that have been designed in accordance with the MIL-STD-1913 Pic Rail specifications..