These rails from LongShot are made to the exact same length and height as the plastic rails that Chiappa supplies with most of their guns, except that these are precision machined from aluminum. They fit perfectly onto the M6-22, X-Caliber, and other Chiappa rifle models that were supplied with 3.85" plastic rails. 9 recoil groove slots.   

Specifications and Features:
3.85" Low Profile Picatinny Rail
9 Slots
Machined from Aluminum
Replaces Factory Plastic Rail
Rigid Mount
Anodized Black