The Redstone Federal Credit Union Visa Signature is a personal credit card from Redstone Federal Credit Union Visa Signature. The annual fee is $0. The ongoing APR is 16.25% to 18.00% after a 0% introductory rate for 6 months. Signup bonus: $150 in cash-back rewards by spending $3,000 in the first 90 days.. Rewards: 5% cash back at restaurants and gas stations (on up to $7,000 spent annually), 3% cash back on groceries and other categories (on up to $7,000 spent annually), 1.5% cash back on all other purchases.. Redstone FCU Visa Signature with CashBack+ or MyChoice Rewards. Huntsville, AL-based, $9B+ CU. Accessible via FFA membership ($8/year).