2014 abstract_background adrian_shephard alternate_costume anthro armor biped boots clothing combat_boots cosplay crossover digital_media_(artwork) earth_pony equid equine female footwear friendship_is_magic gas_mask grenade_launcher gun half-life hasbro headgear heckler_and_koch hecu hecu_marine helmet hi_res horse lambda m203 mammal marines mask military mp5 mp5a3 my_little_pony mysticalpha night_vision niner pinkie_pie_(mlp) pony ranged_weapon simple_background solo standing submachine_gun underbarrel_grenade_launcher valve weapon