Ops-Core Sentry Mid Cut Helmet Cover-Gen4Details Sizing Specs Returns The Gen4 is a next generation helmet cover that fits like a glove and gives the helmet new cutting edge functionality and universal accessory management. The Gen 4 Ops Core Sentry XP helmet cover provides color or camo uniformity, protects the helmets painted ballistic surface and serves as a rock solid platform that secures all accessories, preventing loss or damage. This Mid cut helmet Cover will protect the ballistics