🔥 Big Guns require bracing before firing. The method of bracing determines the AP cost and restrictions:

Bracing MethodAP CostRestriction
Prone or behind Cover0 ⚡ APMust already be Prone or in Cover
Standing Brace1 ⚡ APYou become immobile for the remainder of the turn
Unbraced (no brace)0 ⚡ AP-5 🎯 Accuracy on the attack