Talley Micro Dot Black Anodized Beretta A400 Picatinny Rail Mount. The Beretta A400 Micro Dot Picatinny Rails are all designed and manufactured with precision to fit shotguns with the industry's tightest manufacturing tolerances. These Micro Dot Pic Rails provide a mounting platform for all Micro Red Dot optics mounts that have been designed in accordance with the MIL-STD-1913 Pic Rail specifications. Specifications for Talley MPR400 Micro Dot Black Anodized Beretta A400 Picatinny Rail Mount: Manufacturer: Talley Attachment Type: Picatinny Length: 1.96 in Talley MPR400 Micro Dot Black Anodized Beretta A400 Picatinny Rail Mount