Complete your RugerA(R) Mini-14A(R) , Mini ThirtyA(R) or RugerA(R) AC-556 with this precision machined direct optic mount solution from Samson. IMPORTANT: The Hannibal Rail is currently offered for 2008 and later Mini-14A(R) or Mini ThirtyA(R), or 2007 and earlier Mini-14A(R) (in both black and natural gray). NOTE - It also fits on the Ruger AC-556. Refer to the RugerA(R) serial number lookup on their website if you are unsure what year your rifle was manufactured. It is very important that the correct combination of Hannibal Rail and barrel type is used. If during installation there are any fitment concerns, immediately stop and contact Samson Mfg. customer service. Cho Mfg: Samson Manufacturing Corp