diff --git a/sp/src/game/server/ai_activity.cpp b/sp/src/game/server/ai_activity.cpp
index 5362249d..da12eabe 100644
--- a/sp/src/game/server/ai_activity.cpp
+++ b/sp/src/game/server/ai_activity.cpp
@@ -2462,6 +2462,32 @@ void CAI_BaseNPC::InitDefaultActivitySR(void)
 	ADD_ACTIVITY_TO_SR( ACT_IDLE_AIM_SNIPER_RIFLE_STIMULATED );
 	ADD_ACTIVITY_TO_SR( ACT_WALK_AIM_SNIPER_RIFLE_STIMULATED );
 	ADD_ACTIVITY_TO_SR( ACT_RUN_AIM_SNIPER_RIFLE_STIMULATED );
+
+	ADD_ACTIVITY_TO_SR( ACT_IDLE_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_IDLE_ANGRY_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_WALK_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_RUN_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_WALK_AIM_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_RUN_AIM_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_RANGE_ATTACK_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_RELOAD_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_RANGE_ATTACK_DUAL_PISTOLS_LOW );
+	ADD_ACTIVITY_TO_SR( ACT_RELOAD_DUAL_PISTOLS_LOW );
+	ADD_ACTIVITY_TO_SR( ACT_COVER_DUAL_PISTOLS_LOW );
+	ADD_ACTIVITY_TO_SR( ACT_RANGE_AIM_DUAL_PISTOLS_LOW );
+	ADD_ACTIVITY_TO_SR( ACT_GESTURE_RANGE_ATTACK_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_GESTURE_RELOAD_DUAL_PISTOLS );
+
+	ADD_ACTIVITY_TO_SR( ACT_IDLE_DUAL_PISTOLS_RELAXED );
+	ADD_ACTIVITY_TO_SR( ACT_IDLE_DUAL_PISTOLS_STIMULATED );
+	ADD_ACTIVITY_TO_SR( ACT_WALK_DUAL_PISTOLS_RELAXED );
+	ADD_ACTIVITY_TO_SR( ACT_RUN_DUAL_PISTOLS_RELAXED );
+	ADD_ACTIVITY_TO_SR( ACT_WALK_DUAL_PISTOLS_STIMULATED );
+	ADD_ACTIVITY_TO_SR( ACT_RUN_DUAL_PISTOLS_STIMULATED );
+	
+	ADD_ACTIVITY_TO_SR( ACT_IDLE_AIM_DUAL_PISTOLS_STIMULATED );
+	ADD_ACTIVITY_TO_SR( ACT_WALK_AIM_DUAL_PISTOLS_STIMULATED );
+	ADD_ACTIVITY_TO_SR( ACT_RUN_AIM_DUAL_PISTOLS_STIMULATED );
 #endif
 
 #if EXPANDED_NAVIGATION_ACTIVITIES
@@ -2507,6 +2533,8 @@ void CAI_BaseNPC::InitDefaultActivitySR(void)
 	ADD_ACTIVITY_TO_SR( ACT_RANGE_ATTACK_HMG1_MED );
 	ADD_ACTIVITY_TO_SR( ACT_RANGE_AIM_SNIPER_RIFLE_MED );
 	ADD_ACTIVITY_TO_SR( ACT_RANGE_ATTACK_SNIPER_RIFLE_MED );
+	ADD_ACTIVITY_TO_SR( ACT_RANGE_AIM_DUAL_PISTOLS_MED );
+	ADD_ACTIVITY_TO_SR( ACT_RANGE_ATTACK_DUAL_PISTOLS_MED );
 #endif
 
 	ADD_ACTIVITY_TO_SR( ACT_COVER_WALL_R );
@@ -2620,6 +2648,16 @@ void CAI_BaseNPC::InitDefaultActivitySR(void)
 	ADD_ACTIVITY_TO_SR( ACT_HL2MP_GESTURE_RANGE_ATTACK2_SNIPER_RIFLE );
 	ADD_ACTIVITY_TO_SR( ACT_HL2MP_GESTURE_RELOAD_SNIPER_RIFLE );
 	ADD_ACTIVITY_TO_SR( ACT_HL2MP_JUMP_SNIPER_RIFLE );
+	
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_IDLE_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_RUN_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_WALK_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_IDLE_CROUCH_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_WALK_CROUCH_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_GESTURE_RANGE_ATTACK_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_GESTURE_RANGE_ATTACK2_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_GESTURE_RELOAD_DUAL_PISTOLS );
+	ADD_ACTIVITY_TO_SR( ACT_HL2MP_JUMP_DUAL_PISTOLS );
 #endif
 
 	ADD_ACTIVITY_TO_SR( ACT_HL2MP_IDLE_USE );
diff --git a/sp/src/game/shared/activitylist.cpp b/sp/src/game/shared/activitylist.cpp
index e8191ed0..0b415d75 100644
--- a/sp/src/game/shared/activitylist.cpp
+++ b/sp/src/game/shared/activitylist.cpp
@@ -2578,6 +2578,32 @@ void ActivityList_RegisterSharedActivities( void )
 	REGISTER_SHARED_ACTIVITY( ACT_IDLE_AIM_SNIPER_RIFLE_STIMULATED );
 	REGISTER_SHARED_ACTIVITY( ACT_WALK_AIM_SNIPER_RIFLE_STIMULATED );
 	REGISTER_SHARED_ACTIVITY( ACT_RUN_AIM_SNIPER_RIFLE_STIMULATED );
+
+	REGISTER_SHARED_ACTIVITY( ACT_IDLE_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_IDLE_ANGRY_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_WALK_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_RUN_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_WALK_AIM_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_RUN_AIM_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_RANGE_ATTACK_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_RELOAD_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_RANGE_ATTACK_DUAL_PISTOLS_LOW );
+	REGISTER_SHARED_ACTIVITY( ACT_RELOAD_DUAL_PISTOLS_LOW );
+	REGISTER_SHARED_ACTIVITY( ACT_COVER_DUAL_PISTOLS_LOW );
+	REGISTER_SHARED_ACTIVITY( ACT_RANGE_AIM_DUAL_PISTOLS_LOW );
+	REGISTER_SHARED_ACTIVITY( ACT_GESTURE_RANGE_ATTACK_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_GESTURE_RELOAD_DUAL_PISTOLS );
+
+	REGISTER_SHARED_ACTIVITY( ACT_IDLE_DUAL_PISTOLS_RELAXED );
+	REGISTER_SHARED_ACTIVITY( ACT_IDLE_DUAL_PISTOLS_STIMULATED );
+	REGISTER_SHARED_ACTIVITY( ACT_WALK_DUAL_PISTOLS_RELAXED );
+	REGISTER_SHARED_ACTIVITY( ACT_RUN_DUAL_PISTOLS_RELAXED );
+	REGISTER_SHARED_ACTIVITY( ACT_WALK_DUAL_PISTOLS_STIMULATED );
+	REGISTER_SHARED_ACTIVITY( ACT_RUN_DUAL_PISTOLS_STIMULATED );
+
+	REGISTER_SHARED_ACTIVITY( ACT_IDLE_AIM_DUAL_PISTOLS_STIMULATED );
+	REGISTER_SHARED_ACTIVITY( ACT_WALK_AIM_DUAL_PISTOLS_STIMULATED );
+	REGISTER_SHARED_ACTIVITY( ACT_RUN_AIM_DUAL_PISTOLS_STIMULATED );
 #endif
 
 #if EXPANDED_NAVIGATION_ACTIVITIES
@@ -2623,6 +2649,8 @@ void ActivityList_RegisterSharedActivities( void )
 	REGISTER_SHARED_ACTIVITY( ACT_RANGE_ATTACK_HMG1_MED );
 	REGISTER_SHARED_ACTIVITY( ACT_RANGE_AIM_SNIPER_RIFLE_MED );
 	REGISTER_SHARED_ACTIVITY( ACT_RANGE_ATTACK_SNIPER_RIFLE_MED );
+	REGISTER_SHARED_ACTIVITY( ACT_RANGE_AIM_DUAL_PISTOLS_MED );
+	REGISTER_SHARED_ACTIVITY( ACT_RANGE_ATTACK_DUAL_PISTOLS_MED );
 #endif
 
 	REGISTER_SHARED_ACTIVITY( ACT_COVER_WALL_R );
@@ -2736,6 +2764,16 @@ void ActivityList_RegisterSharedActivities( void )
 	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_GESTURE_RANGE_ATTACK2_SNIPER_RIFLE );
 	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_GESTURE_RELOAD_SNIPER_RIFLE );
 	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_JUMP_SNIPER_RIFLE );
+	
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_IDLE_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_RUN_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_WALK_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_IDLE_CROUCH_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_WALK_CROUCH_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_GESTURE_RANGE_ATTACK_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_GESTURE_RANGE_ATTACK2_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_GESTURE_RELOAD_DUAL_PISTOLS );
+	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_JUMP_DUAL_PISTOLS );
 #endif
 
 	REGISTER_SHARED_ACTIVITY( ACT_HL2MP_IDLE_USE );
diff --git a/sp/src/game/shared/ai_activity.h b/sp/src/game/shared/ai_activity.h
index 4cf3ca22..c8bf150a 100644
--- a/sp/src/game/shared/ai_activity.h
+++ b/sp/src/game/shared/ai_activity.h
@@ -45,7 +45,7 @@
 // This enables a bunch of new activities for unused Half-Life 2 weapons, particularly those which exist in the SDK, but are deactivated by default.
 // This essentially just means mods which restore those weapons have the option of using custom activities for them.
 // Mapbase's backup activity system would allow them to fall back to other weapons if the relevant activities do not exist.
-// Also includes activity names for the "AR3" and "SMG3", which were never used in HL2, but may be useful when additional animation sets are needed.
+// Also includes activity names for "AR3", "SMG3", and "DUAL_PISTOLS", which were never used in HL2, but may be useful when additional animation sets are needed.
 #define EXPANDED_HL2_UNUSED_WEAPON_ACTIVITIES 0
 
 // EXPANDED NAVIGATION ACTIVITIES
@@ -2478,6 +2478,33 @@ typedef enum
 	ACT_IDLE_AIM_SNIPER_RIFLE_STIMULATED,
 	ACT_WALK_AIM_SNIPER_RIFLE_STIMULATED,
 	ACT_RUN_AIM_SNIPER_RIFLE_STIMULATED,
+
+	// Dual Pistols
+	ACT_IDLE_DUAL_PISTOLS,
+	ACT_IDLE_ANGRY_DUAL_PISTOLS,
+	ACT_WALK_DUAL_PISTOLS,
+	ACT_RUN_DUAL_PISTOLS,
+	ACT_WALK_AIM_DUAL_PISTOLS,
+	ACT_RUN_AIM_DUAL_PISTOLS,
+	ACT_RANGE_ATTACK_DUAL_PISTOLS,
+	ACT_RELOAD_DUAL_PISTOLS,
+	ACT_RANGE_ATTACK_DUAL_PISTOLS_LOW,
+	ACT_RELOAD_DUAL_PISTOLS_LOW,
+	ACT_COVER_DUAL_PISTOLS_LOW,
+	ACT_RANGE_AIM_DUAL_PISTOLS_LOW,
+	ACT_GESTURE_RANGE_ATTACK_DUAL_PISTOLS,
+	ACT_GESTURE_RELOAD_DUAL_PISTOLS,
+
+	ACT_IDLE_DUAL_PISTOLS_RELAXED,
+	ACT_IDLE_DUAL_PISTOLS_STIMULATED,
+	ACT_WALK_DUAL_PISTOLS_RELAXED,
+	ACT_RUN_DUAL_PISTOLS_RELAXED,
+	ACT_WALK_DUAL_PISTOLS_STIMULATED,
+	ACT_RUN_DUAL_PISTOLS_STIMULATED,
+
+	ACT_IDLE_AIM_DUAL_PISTOLS_STIMULATED,
+	ACT_WALK_AIM_DUAL_PISTOLS_STIMULATED,
+	ACT_RUN_AIM_DUAL_PISTOLS_STIMULATED,
 #endif
 
 #if EXPANDED_NAVIGATION_ACTIVITIES
@@ -2525,6 +2552,8 @@ typedef enum
 	ACT_RANGE_ATTACK_HMG1_MED,
 	ACT_RANGE_AIM_SNIPER_RIFLE_MED,
 	ACT_RANGE_ATTACK_SNIPER_RIFLE_MED,
+	ACT_RANGE_AIM_DUAL_PISTOLS_MED,
+	ACT_RANGE_ATTACK_DUAL_PISTOLS_MED,
 #endif
 
 	// Wall Cover (for use in custom cover hints)
@@ -2640,6 +2669,16 @@ typedef enum
 	ACT_HL2MP_GESTURE_RANGE_ATTACK2_SNIPER_RIFLE,
 	ACT_HL2MP_GESTURE_RELOAD_SNIPER_RIFLE,
 	ACT_HL2MP_JUMP_SNIPER_RIFLE,
+
+	ACT_HL2MP_IDLE_DUAL_PISTOLS,
+	ACT_HL2MP_RUN_DUAL_PISTOLS,
+	ACT_HL2MP_WALK_DUAL_PISTOLS,
+	ACT_HL2MP_IDLE_CROUCH_DUAL_PISTOLS,
+	ACT_HL2MP_WALK_CROUCH_DUAL_PISTOLS,
+	ACT_HL2MP_GESTURE_RANGE_ATTACK_DUAL_PISTOLS,
+	ACT_HL2MP_GESTURE_RANGE_ATTACK2_DUAL_PISTOLS,
+	ACT_HL2MP_GESTURE_RELOAD_DUAL_PISTOLS,
+	ACT_HL2MP_JUMP_DUAL_PISTOLS,
 #endif
 
 	ACT_HL2MP_IDLE_USE,