NRA Add-A-Buck Program - Donate a Buck today to help the NRA Preserve your Second Amendment Rights! Contributions to the NRA Round-UP Add-A-Buck NRA 501(c)(4) are not deductible as charitable contributions for federal income tax purposes. The deductibility of contributions is subject to the federal tax code. Special item not eligible for any other offered promos or discounts. Ruger Rewards™ cannot be used to purchase NRA Add-A-Buck.