Popular on Evreward since 2008, 5.11 Tactical Series offers coupons, cash back rebates and rewards, with savings as high as 60% off. 5.11 Tactical Series discount coupons are rare, only available once or twice a year, but are often more valuable than similar merchants. Even when 5.11 Tactical Series doesn't have a coupon, you can always get up to 15% cash back, and other great rewards, with every purchase.