There is no additional cost for shipping it is included in the price of all listed parts. If you would like special services for shipping such as insurance or signature confirmation please make an account on our site and contact us for a shipping quote. ILWT cannot be responsible for lost or mishandled shipments once they are dropped to USPS.
Newer griffin tri lug mounts may not work with this tri lug assembly. Older Griffin and all other manufacturer products that are in spec are not an issue